Associations to the word «Pentad»
Noun
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Wiktionary
PENTAD, noun. A group or series of five things
PENTAD, noun. (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.
Dictionary definition
PENTAD, noun. The cardinal number that is the sum of four and one.
Wise words
Four things come not back. The spoken word, the sped arrow,
the past life, ad the neglected opportunity.