(geology) The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.

Synonym of taxi rank / (military) A group of aircraft that remain airborne in order to attack targets quickly when requested.

Third-person singular simple present indicative form of pull rank

present participle of pull rank

simple past tense and past participle of pull rank

(chess) The row on the board on which the pieces (e.g. king, queen) start.

(mathematics) The sum of ranks of members of a sample population

plural of rank outsider

(number theory) Given a positive integer m and a divisibility sequence Sₖ, the smallest index k such that Sₖ is divisible by m;

(politics, often attributively) Any voting system in which voters rank their candidates (or options) in order of preference on their ballots.