In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.
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
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QUANDONG
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