one of two equal or approximately equal parts of a divisible whole, as an object, or unit of measure or time; a part of a whole equal or almost equal to the remainder.

a quantity or amount equal to such a part ( 1 / 2 ).

Sports . either of two equal periods of play, usually with an intermission or rest period separating them. Compare quarter ( def. 10 ) .

one of two; a part of a pair.

Informal .

half dollar.

the sum of 50 cents

Four dimes and two nickels make a half.

Baseball . either of the two units of play into which an inning is divided, the visiting team batting in the first unit and the home team batting in the second.

Football . a halfback.

British Informal .

a half-crown coin.

the sum of a half crown; two shillings, sixpence.

a half pint

He ordered a half of ale.

being one of two equal or approximately equal parts of a divisible whole

a half quart.

being half or about half of anything in degree, amount, length, etc.

at half speed; half sleeve.

partial or incomplete

half measures.

in or to the extent or measure of half.

in part; partly; incompletely

half understood.

to some extent; almost

half recovered.

by half

by very much; by far

She was too talented by half for her routine role.

half again as much or as many

as much as 50 percent more

This mug holds half again as much coffee as the smaller one.

half in two

Southern U.S. (chiefly Gulf States ) . in or into two parts; in half

Cut the cake half in two.

in half

divided into halves

The vase broke in half.

not half

not at all; not really

His first attempts at painting are not half bad.

half ( def. 15 ) .

not the half of

a significant yet relatively minor part of something that remains to be described in full

He accused them of being responsible for the error, and that's not the half of the story. Also, not half of, not half.

adjective

total , whole

adjective

bisected , divided , even-steven , fifty-fifty * , fractional , halved , incomplete , limited , moderate , partlynotes:half is one of two equal parts of a divisible whole; halve means to divide by two , bifid , bipartite , cloven , dichotomous , imperfect , intermediate , mid , middle , midpoint , partial

noun

bisection , division , fifty percent , fraction , hemisphere , moietynotes:half is one of two equal parts of a divisible whole; halve means to divide by two , bifurcation , dichotomy , divided , fifty-fifty , incomplete , moiety , part , partial