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rarefaction
rarefied
rarefy
raregroove
rarely
rareripe
rarified
rarify
raring
rarity
RAS
Ras al-Am
ras malai
rasa
rasam
rasbora
rascal
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rara avis

ra·ra a·vis [ rérrə áyviss, rérrə ávvəss ] (plural ra·rae a·ves [ rèrree áy vz ] or ra·ra a·vis·es)


noun 
Definition:
 
something rare: somebody or something that is rarely encountered

[From Latin, literally "rare bird"]
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