(graph theory) The number of vertices in a maximum clique of a given graph.

(set theory) Any of a sequence of numbers used to represent the cardinality of infinite sets, denoted by the Hebrew letter aleph.

(number theory) A natural number that is abundant but not semiperfect; one for which the sum of the proper divisors (including 1 but not itself) is greater than the number, but no subset of those divisors sums to the number itself.

plural of weird number

plural of counting number

(cricket) The batsman who bats fourth.

(cricket) The batsman who bats seventh.

(cricket) The batsman who bats tenth. / (soccer) The main offensive playmaker in a team, usually an attacking midfielder.

(cricket) The batsman who bats fifth.

(cricket) The batsman who bats third. / (theater) A small town where theatrical performances are unlikely to meet with much success.