(biology) Not having a proto-spinal chord at any stage of development.
achorion
achorn
achorn
noun
(Chester) An acorn.
achroacyte
achroacyte
noun
(cytology) Any colourless cell (especially a lymphocyte)
achroanthes
achrodextrin
achrodextrin
noun
(biochemistry, cytology) A form of dextrin that is not colourable by iodine
achrodextrinase
achroglobin
achroiocythaemia
achroiocythemia
achroite
achroite
noun
(mineralogy) A colourless form of tourmaline
achroma
achromacyte
achromacyte
noun
(cytology) Any cell that lacks its normal pigmentation (especially an erythrocyte that has ruptured and lost its haemoglobin)
achromasia
achromasia
noun
Absence of normal skin pigmentation (from bruising, stress or disease); pallor or achromia.
The inability of a cell or tissue to be stained.
achromat
achromat
noun
(optics) A lens that imparts little color; a lens that is achromatic.
achromate
achromatiaceae
achromatic
achromatic
adj
(biology) Uncolored; not absorbing color from a fluid; -- said of tissue
(music) Having only the diatonic notes of the scale; not modified by accidentals.
(optics) Free from color; transmitting light without color-related distortion.
Being achromatic in subject
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
achromatically
achromatically
adv
In an achromatic manner.
achromaticity
achromaticity
noun
(optics) The state or quality of being achromatic.
achromatin
achromatin
noun
(biology) Tissue that is not stained by fluid dyes.
achromatinic
achromatinic
adj
(cytology, of a cell nucleus) Lacking the ability to be coloured by a stain.
achromatisation
achromatise
achromatise
verb
Non-Oxford British English standard spelling of achromatize.
achromatised
achromatised
verb
simple past tense and past participle of achromatise
achromatising
achromatising
verb
present participle of achromatise
achromatism
achromatism
noun
(optics) The state or quality of being achromatic; achromaticity.
Achromatopia.
The state of being free of colors, not emitting or separating into colors.
achromatisms
achromatisms
noun
plural of achromatism
achromatium
achromatizable
achromatization
achromatization
noun
The act or process of achromatizing.
achromatize
achromatize
verb
(transitive) To deprive of colour; to make achromatic.
(transitive) To remove chromatic aberration from an optical system
achromatized
achromatized
verb
simple past tense and past participle of achromatize
achromatizes
achromatizes
verb
Third-person singular simple present indicative form of achromatize
achromatizing
achromatizing
verb
present participle of achromatize
achromatocyte
achromatocyte
noun
achromacyte
achromatolysis
achromatolysis
noun
(cytology) dissolution of achromatin
achromatope
achromatope
noun
A person who has achromatopia.
achromatophil
achromatophil
noun
(cytology) A cell (or tissue) that is not readily coloured by stains
achromatophile
achromatophile
adj
Being or relating to an achromatophil.
achromatophilia
achromatophilia
noun
(cytology) The condition of being an achromatophil
achromatophilic
achromatopia
achromatopia
noun
defective ability to see colours
achromatopsia
achromatopsia
noun
achromatopia
achromatopsy
achromatopsy
noun
color blindness; inability to distinguish colors; daltonism, achromatopia
achromatosis
achromatosis
noun
(pathology) achromia, albinism
achromatous
achromatous
adj
Lacking normal colour; colourless
achromats
achromats
noun
plural of achromat
achromaturia
achromaturia
noun
(pathology) The lack of pigments (especially bile pigments) in the urine
achromia
achromia
noun
(medicine) Absence of pigmentation, especially in the skin or blood
achromic
achromic
adj
(sciences) Uncoloured; not pigmented; lacking in colour.
achromobacter
achromobacterieae
achromoderma
achromoderma
noun
(pathology) A lack of pigmentation in the skin
achromophilous
achromophilous
adj
Not chromophilous.
achromotrichia
achromotrichia
noun
The absence (or loss) of pigmentation in the hair.
achromous
achromous
adj
colorless; achromatic
achromycin
achronical
achronical
adj
(astronomy) Alternative form of achronic
achronism
achronychous
achroodextrin
achroodextrin
noun
Alternative form of achrodextrin
achroodextrinase
achroous
achroous
adj
Colorless; achromatic.
achropsia
achyrodes
acichlorid
acichloride
acidiferous
acidiferous
adj
Containing or yielding an acid.
acidometer
acidometer
noun
A hydrometer, especially one that is used to measure the strength of an acid.
Any of various other devices used to measure acidity, either chemical or electronic.
acidometry
acidometry
noun
Alternative form of acidimetry
acidoproteolytic
acidoproteolytic
adj
Relating to acidoproteolytes
acidproof
acidproof
adj
Resistant to the corrosive effects of acid.
acieration
acieration
noun
(rare) The conversion of iron into steel.
aciform
aciform
adj
Shaped like a needle.
acinaciform
acinaciform
adj
(botany) Shaped like a scimitar.
acinarious
acinarious
adj
(botany) Having acini
acinetiform
acinetiform
adj
(zoology) Resembling the Acinetae.
aciniform
aciniform
adj
Full of small kernels like a grape.
Having the form of a cluster of grapes; clustered like grapes.
noun
A type of spinneret of a spider formed of spherical particles
acinotubular
acinotubular
adj
(anatomy) Having both acini and tubules
acipenseroid
acipenseroid
noun
Synonym of chondrostean
acipenseroidei
acknowledger
acknowledger
noun
One who acknowledges.
acknowledgers
acknowledgers
noun
plural of acknowledger
ackworth
acleistocardia
acleistocardia
noun
(pathology) The inability of the foramen ovale of the heart to close properly
acneform
acneform
adj
(pathology, especially of a rash) Resembling acne
acneiform
acneiform
adj
(pathology) Alternative form of acneform
acocanthera
acocantherin
acocantherin
noun
Alternative form of acokantherin
aconuresis
aconuresis
noun
(pathology) urinary incontinence (inability to control urination)
acopyrin
acopyrine
acor
acorea
acorea
noun
(pathology) the congenital absence of the pupil in an eye
acoria
acoria
noun
(pathology, obsolete) Excessive eating due to a lack of the sensation of satiety.
acorn
acorn
noun
(nautical) A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.
(zoology) See acorn-shell.
The fruit of the oak, being an oval nut growing in a woody cup or cupule.
acorned
acorned
adj
(rare) Fed or filled with acorns.
Furnished or loaded with acorns
acorns
acorns
noun
plural of acorn
acorus
acoumeter
acoumeter
noun
(physics) An instrument for measuring the acuteness of the sense of hearing.
acoumetry
acoumetry
noun
The measuring of the power or extent of hearing.
acounter
acouometer
acousticolateral
acousticolateral
adj
Relating to, or connecting the inner ear and the lateral line of fish
acoustoelectric
acoustoelectric
adj
Of or pertaining to electroacoustics
acquisitor
acquisitor
noun
one who acquires
acquisitors
acquisitors
noun
plural of acquisitor
acraspedote
acraspedote
adj
Relating to jellyfish of the class Acraspeda
acridone
acridone
noun
(organic chemistry) An tricyclic heterocyclic ketone derived from acridine; any derivative of this compound
acridonium
acridonium
noun
Alternative form of acridinium
acridophagus
acridophagus
noun
(rare) One who eats grasshoppers and locusts
acrimonies
acrimonies
noun
plural of acrimony
acrimonious
acrimonious
adj
(archaic) Harsh and sharp, or bitter and not pleasant to the taste; acrid, pungent.
(figuratively) Angry, acid, and sharp in delivering argumentative replies: bitter, mean-spirited, sharp in language or tone.
acrimoniously
acrimoniously
adv
In an acrimonious manner; with acrimony.
acrimoniousness
acrimoniousness
noun
The quality of being acrimonious.
acrimony
acrimony
noun
A sharp and bitter hatred.
acrindolin
acrindoline
acritochromacy
acritochromacy
noun
(archaic, medicine) Color blindness, achromatopsia.
acritol
acroa
acroaesthesia
acroaesthesia
noun
(pathology) hyperaesthesia, especially that affects the hands or feet
acroama
acroama
noun
esoteric teaching that was not to be written down
rhetorical declamation
acroamata
acroamata
noun
plural of acroama
acroamatic
acroamatic
adj
(rare) Of or related to esoteric knowledge transmitted orally, particularly (historical) the teachings of Aristotle intended only for his disciples as opposed to the exoteric doctrines declaimed in public.
Of or related to lectures.
acroamatical
acroamatical
adj
Synonym of acroamatic
acroamatics
acroamatics
noun
esoteric lectures.
acroanesthesia
acroanesthesia
noun
Alternative form of acroanaesthesia
acroarthritis
acroarthritis
noun
(pathology) arthritis in the joints of the hands or feet
acroasis
acroasis
noun
An oral discourse.
acroasphyxia
acroasphyxia
noun
(pathology) Impaired circulation to the fingers
acroataxia
acroataxia
noun
(pathology) ataxia that affects the hands and fingers, feet and toes
acroatic
acroatic
adj
acroamatic
acrobacies
acrobacy
acrobacy
noun
acrobatics
acrobats collectively
acrobat
acrobat
noun
An athlete who performs acts requiring skill, agility and coordination, often as part of a circus performance.
verb
(figurative) To move like an acrobat (with agility, balance, long leaps, etc.).
To practise acrobatics.
acrobates
acrobatholithic
acrobatholithic
adj
Relating to the upward-projecting dome of a batholith
acrobatic
acrobatic
adj
Of or pertaining to an acrobat.
vigorously active
acrobatical
acrobatical
adj
Alternative form of acrobatic
acrobatically
acrobatically
adv
In an acrobatic manner.
acrobatics
acrobatics
noun
A spectacular display of agility.
The art of performing acrobatic gymnastic feats.
acrobatism
acrobatism
noun
(dated) The feats of an acrobat; daring gymnastic feats.
acrobats
acrobats
noun
plural of acrobat
verb
Third-person singular simple present indicative form of acrobat
acroblast
acroblast
noun
(medicine) Material derived from the Golgi apparatus from which the acrosome develops during spermatogenesis.
(medicine, archaic) A type of embryonic cell forming a layer external to the mesoblast.
acrobryous
acrobystitis
acrocarpi
acrocarpous
acrocarpous
adj
(botany) Developing the archegonium on the summit of the primary stem; fruiting at tips, in the manner of mosses.
acrocentric
acrocentric
adj
(genetics) (of a chromosome) Having the centromere very near to one end, and thus having a long arm, and a very short arm.
noun
A chromosome that has the centromere very near to one end, and thus has a long arm, and a very short arm.
acrocentrics
acrocentrics
noun
plural of acrocentric
acrocephalia
acrocephalia
noun
(medicine) A deformity of the head in which the top is more or less pointed.