verb

1. To divide into two.

2. To represent one half of.

Synonyms: halve

adjective

1. Divided into two (equal) halves

2. Consisting of only one half of what the normal condition requires; having the appearance of lacking one half.

   “a dimidiate leaf, which has only one side developed”

3. Having the organs of one side, or half, different in function from the corresponding organs on the other side.

   “dimidiate hermaphroditism”