Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) quintessence, ether (the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies)
S: (n) ether (any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom)
S: (n) ether, aether (a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves)