Webster's Revised Unabridged Dictionary · 1913

Dogma

Dogma (dog"mȧ) , noun

[Latin dogma, Greek do`gma, pl. do`gmata, from dokei^n to think, seem, appear; akin to Latin decet it is becoming. Compare Decent.]

1.
That which is held as an opinion; a tenet; a doctrine.
The obscure and loose dogmas of early antiquity. — Whewell
2.
A formally stated and authoritatively settled doctrine; a definite, established, and authoritative tenet.
3.
A doctrinal notion asserted without regard to evidence or truth; an arbitrary dictum.