When something is divided into two equal sections, half is one of the two parts. You can split a brownie in half if you want to share it with your friend.

You might live half the year in Alaska and half in Florida — in this case, you spend six months, one half of a 12-month period, in each state. You can also divide food in half or save half your paycheck each week, while spending the other half. Your half brother is a sibling who shares one of your parents; you and he might have the same mother but different fathers. In Old English, half means "side" or "part."

Definitions of half

n one of two equal parts of a divisible whole

half a loaf”
half an hour”
“a century and one half
fifty percent
a half expressed as a percentage
mediety, moiety
one of two (approximately) equal parts
Type of:
common fraction, simple fraction
the quotient of two integers

n one of two divisions into which some games or performances are divided: the two divisions are separated by an interval

first half
the first of two halves of play
last half, second half
the second of two halves of play
Type of:
division, part, section
one of the portions into which something is regarded as divided and which together constitute a whole

adj partial

“gave me a half smile”
“he did only a half job”
incomplete, uncomplete
not complete or total; not completed

adj consisting of one of two equivalent parts in value or quantity

“a half chicken”
“lasted a half hour”
constituting or comprising a part or fraction of a possible whole or entirety

adj (of siblings) related through one parent only

“a half brother”
half sister”
(of siblings) having the same parents

adv partially or to the extent of a half

“he was half hidden by the bushes”

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