Hepta is defined as seven.
An example of the hepta prefix is a heptagon, a shape with seven sides.
- seven: heptagon
- Chem. having seven atoms, radicals, etc. of a (specified) substance: heptachlor
Also, before a vowel, hept-
Origin of hepta-; from Classical Greek hepta, seven
Origin of hepta-Greek, from hepta, seven; see sept&mlowring; in Indo-European roots.
From Ancient Greek ἑπτά (hepta, “seven”).