(mathematics) An element of the two-dimensional algebra over the field of real numbers which contains an element ȷ ≠ 1 satisfying ȷ² = 1.

(phonology) A phonemic split, in some varieties of English without the cot-caught merger, in which the vowel in words like "cloth" and "off" is pronounced with the same vowel as in "thought", as opposed to the vowel used in "lot".

(poker) The rule, present in the game Omaha high-low split, of dividing the pot in half, between the player with the highest and lowest-ranking. / (poker) The game Omaha high-low split.

(bowling) A split where the farthest-left and farthest-right pins are the only pins left standing.

plural of split-complex number

plural of Heegaard splitting

The decomposition of a 3-manifold as two handlebodies unioned along their boundaries.

plural of hair-splitting

present participle of split hairs

(algebra, Galois theory) (of a polynomial) Given a polynomial p over a field K, the smallest extension field L of K such that p, as a polynomial over L, decomposes into linear factors (polynomials of degree 1); (of a set of polynomials) given a set P of polynomials over K, the smallest extension field of K over which every polynomial in P decomposes into linear factors.