Definition of proplyd in English:

proplyd

noun

Astronomy
  • An opaque disc of gas and dust orbiting a young star, thought to be an embryonic planetary system; a protoplanetary disc.

Origin

1990s; earliest use found in United Press International Newswire. From pro- + -pl- + -y + d-.

Pronunciation

proplyd

/ˈprəʊplɪd/