9-letter words containing c, o, a
- acholuria — the absence of bile pigments in the urine.
- achromate — a person unable to perceive color.
- achromats — Plural form of achromat.
- achromous — Colorless; achromatic.
- acid drop — a boiled sweet with a sharp taste
- acid rock — a type of rock music characterized by electronically amplified bizarre instrumental effects
- acid soil — a soil that gives a pH reaction of below about 6, found esp in cool moist areas where soluble bases are leached away
- acidophil — (of cells or cell contents) easily stained by acid dyes
- acidulous — rather sour
- aciniform — shaped like a bunch of grapes
- acoluthic — following, subsequent; specifically, relating to an afterimage
- aconcagua — a mountain in W Argentina: the highest peak in the Andes and in the W Hemisphere. Height: 6960 m (22 835 ft)
- aconitine — a poison extracted from aconite
- acorn cup — the woody cuplike base that holds the nut from an oak tree
- acoustics — the scientific study of sound and sound waves
- acre-foot — the volume of water that would cover an area of 1 acre to a depth of 1 foot: equivalent to 43 560 cubic feet or 1233.5 cubic metres
- acrobatic — An acrobatic movement or display involves difficult physical acts such as jumping and balancing, especially in a circus.
- acrodonts — Plural form of acrodont.
- acrodrome — (of the veins of a leaf) running parallel to the edges of the leaf and fusing at the tip
- acrodynia — (pathology) An epidemic disease of the skin characterized by increased sensibility of the soles and palms, with pricking sensations in them and rheumatoid pains in the hands and feet.
- acrolects — Plural form of acrolect.
- acroliths — Plural form of acrolith.
- acrologic — Of or pertaining to the naming of hieroglyphic symbols by the first phonetic sound of the picture they represent.
- acronical — happening at sunset, as the rising of a star
- acronymed — a word formed from the initial letters or groups of letters of words in a set phrase or series of words and pronounced as a separate word, as Wac from Women's Army Corps, OPEC from Organization of Petroleum Exporting Countries, or loran from long-range navigation.
- acronymic — a word formed from the initial letters or groups of letters of words in a set phrase or series of words and pronounced as a separate word, as Wac from Women's Army Corps, OPEC from Organization of Petroleum Exporting Countries, or loran from long-range navigation.
- acropathy — any disease of the extremities.
- acropetal — (of leaves and flowers) produced in order from the base upwards so that the youngest are at the apex
- acrophobe — a person who is abnormally afraid of heights
- acrophony — the use of symbols to represent sounds
- acropolis — the citadel of an ancient Greek city
- acrosomal — relating to the acrosome
- acrosomes — Plural form of acrosome.
- acrospire — the first shoot developing from the plumule of a germinating grain seed
- acrospore — a spore borne at the tip of a sporophore, as a basidiospore.
- acrostics — Plural form of acrostic.
- acroteria — acroters
- actinopod — any protozoan of the phylum Actinopoda, such as a radiolarian or a heliozoan, having stiff radiating cytoplasmic projections
- actionary — (business, obsolete) A shareholder in a joint-stock company.
- actioners — Plural form of actioner.
- actioning — Present participle of action.
- actionist — a person who is bent on (spoken) action
- activator — a thing or person that activates
- actuation — to incite or move to action; impel; motivate: actuated by selfish motives.
- actuators — Plural form of actuator.
- acuminous — keen insight; shrewdness: remarkable acumen in business matters.
- acupoints — Plural form of acupoint.
- acusector — a needle for cutting tissue by means of a high-frequency electric current.
- acyclovir — an antiviral drug used to treat herpes. Formula: C8H11N5O3
- acylation — the introduction into a chemical compound of an acyl group