As nouns the difference between triad and nonad
is that triad is a grouping of three while nonad is a collection, or series of nine things.
triad
English
Noun
(
en noun)
A grouping of three.
(music) A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale.
(electronics) on a CRT display, a group of three neighbouring phosphor dots, coloured green, red, and blue.
A branch of a Chinese underground criminal society, mostly based in Hong Kong.
Synonyms
* (group of three) threesome, trine, trinity, trio, triplet, troika, triumvirate
Related terms
* triadic
Anagrams
*
nonad
English
Noun
(
en noun)
a collection, or series of nine things
Derived terms
* nonadic
Usage notes
*True nonads seem to be rare. Most collections of nine things are actually triads of triads.
*Also the name of a photographic filter used for astronomy, meaning "no Sodium D-line", where Sodium has the symbol Na, from the Latin natrium .
Anagrams
*
*