Is Tuesday named for a one-handed god?
c.1600 (in plural dogmata), from Latin dogma "philosophical tenet," from Greek dogma (genitive dogmatos) "opinion, tenet," literally "that which one thinks is true," from dokein "to seem good, think" (see decent). Treated in 17c.-18c. as a Greek word in English.
A teaching or set of teachings laid down by a religious group, usually as part of the essential beliefs of the group.
Note: The term dogma is often applied to statements put forward by someone who thinks, inappropriately, that they should be accepted without proof.