What is "unformed stars"

Unformed \Un*formed"\, a. [In sense 1 properly p. p. of un form; in senses 2 and 3 pref. un- not + formed.]

1. Decomposed, or resolved into parts; having the form destroyed.

2. Not formed; not arranged into regular shape, order, or relations; shapeless; amorphous.

3. (Biol.) Unorganized; without definite shape or structure; as, an unformed, or unorganized, ferment.

   Unformed stars (Astron.), stars not grouped into any constellation; informed stars. See Sporades.