heptad

heptad has 2 senses in the JumbleFix dictionary. Letters: 6.

Definitions

• n.. An atom which has a valence of seven, and which can be theoretically combined with, substituted for, or replaced by, seven monad atoms or radicals; as, iodine is a heptad in iodic acid. Also used as an adjective.
• n.. the cardinal number that is the sum of six and one