(rare) Like a tightrope walker; delicately balanced, precarious.

(organic chemistry) A collagenase inhibitor, 3,4,7,9-tetrahydroxy-2-methoxy-6-methyl-1H-phenalen-1-one, produced by Aspergillus niger or its close relatives.

(finance) A group of investment funds that are aggregated together.

A public funeral procession accompanied by a brass band, as traditionally performed in New Orleans, and typically involving a switch at a certain point from sombre to more upbeat music.

(slang) modern and stylish

(mathematical analysis, statistics) Any of various real functions whose graph resembles an elongated letter "S"; specifically, the logistic function y=(eˣ)/(eˣ+1)=1/(1+e⁻ˣ).

(number theory) A function, denoted by S(n) for some positive integer n, that yields the smallest number s such that n divides the factorial s!. For example, the number 8 does not divide 1!, 2!, 3!, but does divide 4!, so S(8) = 4.

(chiefly Britain, dated) Having enough money to spend.

Any of a large number of species of fungus that are symbionts of ambrosia beetles

plural of index fund