Associations to the word «Pentad»

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

To use the same words is not a sufficient guarantee of understanding; one must use the same words for the same genus of inward experience; ultimately one must have one's experiences in common.
Friedrich Nietzsche