“+ noun
Etymology: International Scientific Vocabulary tetra- + methylene
1. : a bivalent radical−CH 2 CH 2 CH 2 CH 2 − containing four methylene groups
2. : cyclobutane
“+ noun
Etymology: International Scientific Vocabulary tetra- + methylene
1. : a bivalent radical−CH 2 CH 2 CH 2 CH 2 − containing four methylene groups
2. : cyclobutane
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012