English
heptaquark
From hepta- + quark.
Proto-Indo-European *septḿ̥ ‘seven’
Proto-Hellenic *heptə́ ‘seven’
Ancient Greek ἑπτά ‘seven’
English hepta-
Today it means
noun Any hypothetical composite particle composed of seven quarks or antiquarks.
Language periods are conventional ranges, not dates for this word.
Etymograph / heptaquark