en molecular hydrogen (n)
― IsA ⟶
Weight: 1.0
en tangible thing (n) Source: OpenCyc 2012
en molecular hydrogen (n)
― IsA ⟶
Weight: 1.0
en gas (n) Source: OpenCyc 2012
en molecular hydrogen (n)
― IsA ⟶
Weight: 1.0
en inorganic substance (n) Source: OpenCyc 2012