attenuated

verb (used with object), at·ten·u·at·ed, at·ten·u·at·ing.

1. to weaken or reduce in force, intensity, effect, quantity, or value: to attenuate desire.
2. to make thin; make slender or fine.
3. Bacteriology, Immunology. to render less virulent, as a strain of pathogenic virus or bacterium.
4. Electronics. to decrease the amplitude of (an electronic signal).

verb (used without object), at·ten·u·at·ed, at·ten·u·at·ing.

5. to become thin or fine; lessen.

adjective

6. weakened; diminishing.
7. Botany. tapering gradually to a narrow extremity.

verb (əˈtɛnjʊˌeɪt)

1. to weaken or become weak; reduce in size, strength, density, or value
2. to make or become thin or fine; extend
3. (tr) to make (a pathogenic bacterium, virus, etc) less virulent, as by culture in special media or exposure to heat

adjective (əˈtɛnjʊɪt, -ˌeɪt)

4. diluted, weakened, slender, or reduced
5. botany tapering gradually to a point

v.

“to make thin, to make less,” 1520s, from Latin attenuatus “enfeebled, weak,” past participle of attenuare “to make thin, lessen, diminish,” from ad- “to” (see ad-) + tenuare “make thin,” from tenuis “thin” (see tenet). Related: Attenuated; attenuating. Earlier was Middle English attenuen “to make thin (in consistency),” early 15c.

v.

1. To reduce in force, value, amount, or degree; weaken; diminish.
2. To make bacteria or viruses less virulent.

adj.

1. Reduced or weakened, as in strength, value, or virulence.