plural of error of the second kind

(uncommon) Unique and exceptionally different. / (uncommon) Something unique which appears in the earliest phases.

(uncommon) A unique example or type appearing in the earliest phases.

plural of first-of-its-kind

plural of Stirling number of the second kind

(mathematics) The number of ways to partition a set of n objects into k non-empty subsets, denoted by S(n,k).

(informal, slang, African-American Vernacular) In an unspecified, careless, or random manner; in any way; haphazardly.

(colloquial) Would you please (do something); used to ask someone to do something politely.

(idiomatic) Diversity is essential: the world would be incomplete if everyone were alike; an expression of surprise at a person or people's eccentricity.

(physics, pseudoscience) A perpetual motion machine that produces work without the input of energy.