defense

[ dih-fens or especially for 7, 9, dee-fens ]
/ dɪˈfɛns or especially for 7, 9, ˈdi fɛns /

noun

verb (used with object), de·fensed, de·fens·ing.

Sports. to defend against (an opponent, play, or tactic).
Also especially British, defence.

Origin of defense

1250–1300; Middle English < Old French < Late Latin dēfēnsa a forbidding, noun use of feminine of past participle of Latin dēfendere to defend; replacing Middle English defens < Anglo-French, Old French < Medieval Latin defēnsum (thing) forbidden, neuter past participle of Latin dēfendere

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for defense

Medicine definitions for defense

defense

[ dĭ-fĕns ]

n.

A means or method that helps protect the body or mind, as against disease or anxiety.

Related forms

de•fensive (-fĕnsĭv) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.