sidero-

¹

1. a combining form meaning “iron,” used in the formation of compound words:

   siderolite.

sidero-

²

1. a combining form meaning “star,” “constellation,” used in the formation of compound words:

   siderostat.

sidero-

combining_form

1. indicating iron

   siderolite

Word History and Origins

Origin of sidero-¹

< Greek sidēro-, combining form of sídēros iron

Origin of sidero-²

< Latin sīder- (stem of sīdus ) star-group + -o-

Word History and Origins

Origin of sidero-¹

from Greek sidēros