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

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

Third-person singular simple present indicative form of pull rank

present participle of pull rank

simple past tense and past participle of pull rank

plural of rank outsider

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

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

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

(mathematics, linear algebra, of a matrix) Having the highest possible rank for its size; having a rank (dimension) equal to the the number of columns or the number of rows.