noun

1. One of two usually roughly equal parts into which anything may be divided, or considered as divided.

   “I ate the slightly smaller half of the apple.”

2. Half of a standard measure; frequently used for half a pint of beer or cider.

3. (preceded by “a” or a number) The fraction obtained by dividing 1 by 2.

   “Three-quarters minus a quarter is a half.”

Synonyms: ½

verb

1. To halve.

Synonyms: dimidiate

adjective

1. Consisting of a half (1/2, 50%).

   “a half bushel; a half hour; a half dollar; a half view”

2. Consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect.

   “a half dream; half knowledge”

3. (of a sibling) Having one parent (rather than two) in common.

Synonyms: demi-, hemi-, semi-

adverb

1. In two equal parts or to an equal degree.

2. In some part approximating a half.

3. Partially; imperfectly.

   “He does sometimes half wish to change his life, but it is too difficult.”

preposition

1. A half-hour after, thirty minutes after (used with the number of the hour).

   “half one”