protostar

As an adjective nebular

is (astronomy) of or pertaining to a nebula.

As a noun protostar is

(star) a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As nouns the difference between planetesimal and protostar

is that planetesimal is planetesimal while protostar is (star) a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As nouns the difference between templates and protostar

is that templates is plural of lang=en while protostar is a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As a verb templates

is third-person singular of template.

As nouns the difference between nebula and protostar

is that nebula is a cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes) while protostar is a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As a noun protostar

is a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As an adjective protosolar is

describing the conditions prior to the formation of the solar system, or describing the protostar that became the sun.

As a noun protostar

is a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

As an adjective protostellar is

of or pertaining to a protostar.