A system of numerals represented by letters of the Greek alphabet. These are used for special purposes, where in English Roman numerals might be used. The numerals are formed by the addition of a mark to the upper or lower case letter, i.e. Γ΄, δ΄, θ΄. In addition to the usual Greek letters three additional symbols are used: stigma (ϛ), koppa (ϟ) and sampi (ϡ); stigma (Ϛ or ϛ) may also be represented by ΣΤ΄ or στ΄.

Synonym of Greek numeral

A result of a test that shows as absent something that is present. / (statistics) A type II error (“accepting the null hypothesis when it is false”).

(idiomatic) A very short (but unspecified) amount of time; no time at all.

Turning away from urban environs and attitudes, towards an organic, agrarian lifestyle.

Not producing venom.

(nautical) A scourge (multi-tail whip) having nine, often knotted, whipcords, formerly used for flogging as naval punishment.

Exact; precise; appropriate. / Unimaginative; over-literal; lacking nuance. / (slang, Australia, often figuratively) Smelly, malodorous. / (slang, gambling, of a bet on a horse) To finish first.

worthy of being remembered mentally or in writing.

A pelagic octopus of genus Argonauta, found in warm seas, whose females produce a paper-thin egg case resembling a shell into which she deposits her eggs.