Function: combining form
Etymology: International Scientific Vocabulary, probably alteration of hepta-; from the fact that 10 21 is the seventh power of 10 3
: one sextillionth (10 -21 ) part of < zepto second>
Function: combining form
Etymology: International Scientific Vocabulary, probably alteration of hepta-; from the fact that 10 21 is the seventh power of 10 3
: one sextillionth (10 -21 ) part of < zepto second>
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012