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

18 April 2025

GROIN

(noun) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals


coffee icon

Coffee Trivia

According to Guinness World Records, the largest coffee press is 230 cm (7 ft 6 in) in height and 72 cm (2 ft 4 in) in diameter and was created by Salzillo Tea and Coffee (Spain) in Murcia, Spain, in February 2007. The cafetière consists of a stainless steel container, a filtering piston, and a superior lid.

coffee icon