- 1. n. 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. Source: opted
- 2. a. Having the valence of a pentad. Source: opted
- 3. n. the cardinal number that is the sum of four and one Source: wordnet
- 4. 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. Having the valence of a pentad. Source: webster
- 5. Any element, atom, or radical, having a valence of five, orwhich can be combined with, substituted for, or compared with, fiveatoms of hydrogen or other monad; as, nitrogen is a pentad in theammonium compounds. Source: adambom
- 6. n the cardinal number that is the sum of four and one Source: ecdict
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pentad
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valenceatomcombinedcomparedcompoundselementhydrogenmonadnitrogenradicalsubstitutedammoniumatomscardinalnumbersum