> as lemmas
heptacarbon series
heptacarbon adj.
Brit. 
/ˌhɛptəˈkɑːbən/
, /ˌhɛptəˈkɑːbən/U.S. /ˌhɛptəˈkɑrbən/
Chemistry containing seven carbon atoms, as in heptacarbon compounds, heptacarbon series: cf. heptane n./ˌhɛptəˈkɑrbən/ΚΠ
1866 W. Odling Lect. Animal Chem. 109 Heptacarbon compounds such as the benzoic residue of hippuric acid.
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as lemmas