English word protogalaxy comes from English galaxy, English proto-
| Dictionary entry | Language | Definition |
|---|---|---|
| galaxy | English (eng) | (galaxy) Any of the collections of many millions or billions of stars, galactic dust, black holes, etc. existing as independent and coherent systems, of which there are billions in the known universe. [from 19th c.]. (now, _, rare) The Milky Way; the apparent band of concentrated stars which appears in the night sky over earth. [from 14th c.]. |
| proto- | English (eng) | (chemistry) Relating to protons and/or positive charge.. (linguistics, genetics) most recent common ancestor (often hypothetical) of. First. |
| protogalaxy | English (eng) | A cloud of gas which is starting to form a galaxy. |