Ra Definition

noun
The sun god and principal deity: usually depicted as having the head of a hawk and wearing the solar disk as a crown.
Webster's New World

Obsolete spelling of era.

Wiktionary
Synonyms:
abbreviation
Regular army.
American Heritage
Rear Admiral.
Webster's New World
Residence assistant.
American Heritage
Right ascension.
Webster's New World
Royal Academician.
Webster's New World
symbol
Radium.
Webster's New World