Paeon n. : A foot of four syllables, one long and three short, admitting of four combinations, according to the place of the long syllable.

Example:


Taxonomy
Paean, god, paeans, Apollo, battle, Ancient Greek, free encyclopedia, Paeon, healer, victory, epithet, paian, chant, the Greek gods, Homer, disease, health god, Battle of Salamis.

Defination from the web:
Paeon became a mere epithet of Apollo in his capacity as a god capable of bringing disease and therefore propitiated as a god of healing. ... To discover the relation between Paean or Paeon in the sense of "healer" and Paean in the sense of "song" it is necessary to identify the ...