“+- noun
Etymology: International Scientific Vocabulary tetra- + boric
: a dibasic acid H 2 B 4 O 7 containing four atoms of boron in the molecule, formed by heating ordinary boric acid, and known especially in the form of salts (as borax)
“+- noun
Etymology: International Scientific Vocabulary tetra- + boric
: a dibasic acid H 2 B 4 O 7 containing four atoms of boron in the molecule, formed by heating ordinary boric acid, and known especially in the form of salts (as borax)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012