English word protosolar comes from English solar, English proto-
| Dictionary entry | Language | Definition |
|---|---|---|
| solar | English (eng) | (astrology, obsolete) Born under the predominant influence of the sun.. Measured by the progress or revolution of the sun in the ecliptic; as, the solar year.. Of or pertaining to the sun; proceeding from the sun. Produced by the action of the sun, or peculiarly affected by its influence. (obsolete) A loft or upper chamber forming the private accommodation of the head of the household in a [...] |
| proto- | English (eng) | (chemistry) Relating to protons and/or positive charge.. (linguistics, genetics) most recent common ancestor (often hypothetical) of. First. |
| protosolar | English (eng) | (astronomy) Describing the conditions prior to the formation of the solar system, or describing the protostar that became the sun. |