penta-


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Related to penta-: octo-, hexa-, HEPT, Icosa

penta-

or pent-
pref.
Five: pentamerous.

[Greek, from pente, five; see penkwe in Indo-European roots.]

penta-

combining form
five: pentagon; pentameter; pentaprism.
[from Greek pente five]

penta-

a combining form meaning “five”: pentavalent. Also, esp. before a vowel,pent-.
[< Greek pent-, penta-, comb. forms representing pénte five]
References in periodicals archive ?
Studies in rats and mice have found that penta- and octa-BDEs disrupt development.
These compounds, being large and bulky, cross the cell membrane with difficulty, rendering them less toxic than their penta- and octa-brominated counterparts.
has initiated discussions with EPA regarding a possible voluntary phase-out of penta- and octa-PBDEs along with a full evaluation of a viable alternative.