(mathematics) a pair of integers (i,j) is an inversion pair of some permutation 𝜎 if i𝜎(j).

(Australia) A small meat pie intended as a party snack.

A particle with diameter less than about 100 nanometers (nm).

(computing) The path length from a given node to its nearest descendant null node in a binary tree.

(graph theory) The number of edges traversed in a given path in a graph. / (physics) The distance travelled by light in a specified context.

(euphemistic) To urinate.

A ballot printed on paper, where the voter places a form of acknowledgment next to the candidate of their choice.

(physics) Any of a number of bound states of a heavy quark and its antiquark, especially that formed from a bottom quark and an anti-bottom quark.

A tropical South American palm, Phytelephas macrocarpa, whose seed is used as a substitute for ivory.

plural of pan-loaf