Pentacrons
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Pentacra — Pentacron Pen*ta cron, n.; pl. L. {Pentacra}, E. {Pentacrons}. [NL., fr. Gr. ? five + ? a summit.] (Geom.) A solid having five summits or angular points. [1913 Webster] … The Collaborative International Dictionary of English
Pentacron — Pen*ta cron, n.; pl. L. {Pentacra}, E. {Pentacrons}. [NL., fr. Gr. ? five + ? a summit.] (Geom.) A solid having five summits or angular points. [1913 Webster] … The Collaborative International Dictionary of English
