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aardvark a large mammal with a long snout, long ears, a long tail, and with long fur mostly around its legs. Aardvarks are active at night, when they use their powerful claws to dig open ant or termite nests. They catch their food with their long, sticky tongue. Aardvarks live in southern and central Africa. Although they are sometimes called anteaters, aardvarks are not closely related to any other kind of mammal.
activate to cause action in or make active; start.
active used in grammar to describe a form of the verb that emphasizes the person or thing who performs the action. In the sentence "John ate the apple," the verb "ate" is in an active form. In the sentence "The apple was eaten by John," the verb is in a passive form. [1/2 definitions]
activism the belief in or practice of trying to make social or political changes through active, militant, or demonstrative involvement, esp. in particular issues.
activity the condition of being active or doing something. [1/2 definitions]
alive going on; not ended; active. [1/3 definitions]
animated full of activity, spirit, or excitement. [1/3 definitions]
animosity strong dislike or active hostility.
antibacterial active in killing bacteria.
associate a person who is active with someone else in operating a business; a partner. [1/3 definitions]
athletic talented or active in sports and other physical activities. [1/2 definitions]
at rest not active, not moving, or sleeping.
at war in a state of active fighting or conflict.
avoid to keep away from or keep from happening, esp. by active effort. [1/2 definitions]
bacillus any rod-shaped bacterium that is active only in the presence of oxygen, or one composed of a chain of rod-shaped elements. [1/2 definitions]
brisk active or full of energy; lively; quick. [1/2 definitions]
busy doing something or working on something; active. [1/4 definitions]
button a small, round symbol on a computer screen or electronically-active page that allows one to activate a program. [1/7 definitions]
call-up an order to a large number of people to report for active military duty.
call up to give the order for (soldiers, guards, or the like) to report for active service. [1/2 definitions]
campaign to take an active part in a campaign. [1/2 definitions]