dimidiate

divided in halves

biology rare having one of two sides or parts less developed than the other dimidiate antlers

(tr) heraldry to halve (two bearings) so that they can be represented on the same shield

Derived forms of dimidiate

dimidiation, noun

C17: from Latin dīmidiāre to halve, from dīmidius half, from dis- apart + medius middle

To dimidiate two coats of arms, the dexter half of one shield was conjoined to the sinister half of the other.

A Complete Guide to Heraldry |Arthur Charles Fox-Davies
The calyptra (fig. 24) is half-cleft (dimidiate) and very hairy.

An Elementary Text-book of the Microscope |John William Griffith
Dimidiate, halved, said of a sessile pileus semi-circular in form and attached by the plane edge directly to the wood.

Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. |George Francis Atkinson
Dimidiate, halved; as where a leaf or leaflet has only one side developed.

The Elements of Botany |Asa Gray

The stem is wanting, and the cap is shelving, dimidiate, reniform or suborbicular.

Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. |George Francis Atkinson