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Webster 1913 Edition

Adj.

[From L.

draco

dragon, in allusion to the terms

dragon’s head

and

dragon's tail

(Astron.)

Belonging to that space of time in which the moon performs one revolution, from ascending node to ascending node. See

Dragon's head

, under

[Obs.]

“Dracontic month.”

Crabb.

Adj.

[L.] In astronomy, belonging to that space of time in which the moon performs one entire revolution.