Bisection

to cut or divide into two equal or nearly equal parts.
Geometry. to cut or divide into two equal parts:
to bisect an angle.
to intersect or cross:
the spot where the railroad tracks bisect the highway.
to split into two, as a road; fork:
There’s a charming old inn just before the road bisects.
Also called split. Philately. a portion of a stamp, usually half, used for payment of a proportionate amount of the face value of the whole stamp.
Historical Examples

A Critical History of Greek Philosophy W. T. Stace
Social Origins and Primal Law Andrew Lang
Text Books of Art Education, Book IV (of 7) Hugo B. Froehlich
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley
Our Knowledge of the External World as a Field for Scientific Method in Philosophy Bertrand Russell
Know the Truth; A critique of the Hamiltonian Theory of Limitation Jesse H. Jones
The Traditional Games of England, Scotland, and Ireland (Vol I of II) Alice Bertha Gomme
Social Origins and Primal Law Andrew Lang
Social Origins and Primal Law Andrew Lang
Woodwork Joints William Fairham

verb
(transitive) (maths) to divide into two equal parts
to cut or split into two
n.
v.
bisect
(bī’sěkt’, bī-sěkt’)
To cut or divide into two parts, especially two equal parts.