en heptane (n, substance)
― IsA ⟶
Weight: 2.0
en methane series (n, substance) Source: Open Multilingual WordNet
en heptane
― IsA ⟶
Weight: 1.0
en alkane (n) Source: English Wiktionary
en heptane
― IsA ⟶
Weight: 0.5
en chemical compound (n) Source: DBPedia 2015