10-letter words containing a, c, o, i
- acrophobia — abnormal fear or dread of being at a great height
- acrophobic — a pathological fear of heights.
- acrophonic — the use of what was originally a logogram as a phonetic symbol for the initial sound of the word the logogram represented, as, in Semitic writing, the use of a picture of a shepherd's crook to represent the sound (l), the first sound of lamed, the Hebrew word for a shepherd's crook.
- acrostical — relating to an acrostic
- acroterial — relating to an acroter
- acroterion — acroterium.
- acroterium — an ornament positioned on top of an acroter
- actiniform — having radial form; rayed
- actinogram — the record produced by the action of an actinograph.
- actinolite — a green mineral of the amphibole group consisting of calcium magnesium iron silicate. Formula: Ca2(Mg,Fe)5Si8O22(OH)2
- actinology — the science of light rays and their chemical effects
- actinopods — any protozoan of the subclass Actinopoda, including the heliozoans and radiolarians, having stiff, rodlike, radiating pseudopodia.
- actinozoan — anthozoan
- action man — a person who relishes physical activity
- actionable — If something that you do or say to someone is actionable, it gives them a valid reason for bringing a legal case against you.
- actionably — In an actionable manner.
- actionless — inactive, without action
- activation — to make active; cause to function or act.
- activators — Plural form of activator.
- actomyosin — a complex protein in skeletal muscle that is formed by actin and myosin and which, when stimulated, shortens to cause muscle contraction
- actuations — to incite or move to action; impel; motivate: actuated by selfish motives.
- acyrologia — (rhetoric) inexact, inappropriate or improper use of a word.
- addictions — Plural form of addiction.
- adhocratic — Relating to adhocracy.
- adipocytes — Plural form of adipocyte.
- adirondack — a member of an Algonquian people living mainly north of the St. Lawrence River.
- adjunction — (in phrase-structure grammar) the relationship between a branch of a tree representing a sentence to other branches to its left or right that descend from the same node immediately above
- advocacies — the act of pleading for, supporting, or recommending; active espousal: He was known for his advocacy of states' rights.
- advocating — to speak or write in favor of; support or urge by argument; recommend publicly: He advocated higher salaries for teachers.
- advocation — the transfer to itself by a superior court of an action pending in a lower court
- advocative — characterized by advocating
- aeciospore — any of the spores produced in an aecium of the rust fungi, which spread to and infect the primary host
- aeciostage — the period in their life cycle during which certain rust fungi produce aecia
- aerobatics — Aerobatics are skilful displays of flying, usually to entertain people watching from the ground.
- aerobicize — (of a person) to perform aerobics
- aerobiotic — Of or pertaining to aerobiosis.
- aerometric — Describing any measurement of a physical property of air (or other gases), but especially of temperature, pressure and velocity.
- aeronautic — relating to air companies
- aerophilic — (biology, especially of microorganisms) That thrive in the presence of molecular oxygen.
- aeroponics — aeroculture.
- aerostatic — of or relating to aerostatics.
- aerotactic — of movement towards or away from oxygen
- aerotropic — of or relating to the growth of plants towards or away from oxygen
- aetiologic — Of or pertaining to an aetiology.
- affections — feelings of fondness, esteem
- affliction — An affliction is something which causes physical or mental suffering.
- aficionada — a female aficionado
- aficionado — If someone is an aficionado of something, they like it and know a lot about it.
- afro-chain — (in the Caribbean) a large chain necklace with a central pendant: usually worn with a dashiki by men
- agonistics — The range of activities associated with aggressive encounters between members of the same species, including threat, attack, appeasement, or retreat.