PENTAD

five, cinque, quint, quintet, fivesome, quintuplet, pentad, fin, Phoebe, Little Phoebe

(noun) the cardinal number that is the sum of four and one

Source: WordNet® 3.1


Etymology

Noun

pentad (plural pentads)

A group or series of five things.

A mean average value of temperature, etc, taken every five days.

(chemistry) Any element, atom, or radical having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad.

Synonyms

• (group of five): fivesome; see also quintet

Coordinate terms

• monad · duad, dyad · triad · tetrad · pentad · hexad · heptad · octad · ennead, nonad · decad, decade · hendecad · dodecad, duodecade

Anagrams

• panted, pedant

Source: Wiktionary


Pen"tad, n. Etym: [Gr. (Chem.)

Definition: Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.

Pen"tad, a. (Chem.)

Definition: Having the valence of a pentad.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET



Word of the Day

22 September 2024

SPRINGBOARD

(noun) a beginning from which an enterprise is launched; “he uses other people’s ideas as a springboard for his own”; “reality provides the jumping-off point for his illusions”; “the point of departure of international comparison cannot be an institution but must be the function it carries out”


coffee icon

Coffee Trivia

Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.

coffee icon