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| ACCUSTOM | | v. (foll. By to) make used to (accustomed him to hardship). [french: related to *custom] | |
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| ACHILLES | | heel n. Person's weak or vulnerable point. [achilles, greek hero in the iliad]
- tendon n. Tendon connecting the heel with the calf muscles. | |
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| ACOUSTIC | | adj. - of sound or the sense of hearing.
- (of a musical instrument etc.) Without electrical amplification (acoustic guitar). acoustically adv. [greek akouo hear] | |
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| ACQUAINT | | v. (usu. Foll. By with) make aware of or familiar with (acquaint me with the facts). be acquainted with have personal knowledge of; know slightly. [latin: related to *ad-, *cognizance] | |
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| ACQUIRED | | immune deficiency syndrome see *aids.
- taste n. - liking developed by experience.
- object of this. | |
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| ACROSTIC | | n. Poem etc. In which certain letters (usu. The first and last in each line) form a word or words. [greek akron end, stikhos row] | |
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| ACTINISM | | n. Property of short-wave radiation that produces chemical changes, as in photography. [greek aktis ray] | |
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| ACTINIUM | | n. Chem. Radioactive metallic element found in pitchblende. [as *actinism] | |
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| ACTIVATE | | v. (-ting) 1 make active.
- chem. Cause reaction in.
- make radioactive. | |
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| ACTIVISM | | n. Policy of vigorous action, esp. For a political cause. activist n. | |
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