plural of 16-cell

(geometry) A four-dimensional polytope, analogous to an octahedron, whose sixteen bounding facets are tetrahedra.

(computing) Unicode Transformation Format-16; a Unicode encoding scheme which uses two-byte (16-bit) code units (singly for characters in plane 0, and in four-byte [32-bit] surrogate pairs for supplementary characters in planes 1 through 16).

(physics) The major stable isotope of oxygen, ¹⁶₈O, having eight protons and eight neutrons; it amounts to over 99% of the element in nature

The residence and offices of the President and certain members of his staff. / (colloquial, idiomatic) The current President and the closest members of his administration.

An aerial maneuver in which the performer spins through four-and-a-half revolutions.

(baseball) A one-game playoff between two teams for a playoff spot.

plural of 1620

plural of 163rd game

(paper, printing) Sextodecimo.