hepta-


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Related to hepta-: octo-, penta-

hepta-

or hept-
pref.
Seven: heptarchy.

[Greek, from hepta, seven; see septm̥ in Indo-European roots.]

hepta-

or before a vowel

hept-

combining form
seven: heptameter.
[from Greek]

hepta-

a combining form meaning “seven”: heptamerous.
Also, esp. before a vowel,hept-.
[< Greek, comb. form of heptá seven, c. Latin septem; akin to Old English seofon seven]
References in periodicals archive ?
Apparent half-lives of hepta- to decabrominated diphenyl ethers in human serum as determined in occupationally exposed workers.
FDA analyses since 1979 for more highly chlorinated dioxins have turned up hepta- and octa-chlorinated species in eggs, bacon, chicken, pork chops and beef liver--contamination that the researchers say appears to be related to agricultural use of pentachlorophenol.
In figures where individual POPs were assigned to different groups, we grouped PCBs according to their backbone chlorination into mono-, di-, tri-, tetra-, penta-, hexa-, hepta-, octa, and nonachlorinated biphenyls.
d) Hepta-, octa-, nona-, and deca-chloro biphenyls: 179, 176, 187, 183, 174, 177, 171, 201, 172, 180, 200, 170, 190, 199, 203, 196, 195, 194, 206.