jpdb beta

scarce; rare

rare; uncommon

uncommon; rare; extraordinary; matchless

dilute sulfuric acid; dilute sulphuric acid

rare book

rare; uncommon

dilute hydrochloric acid

rare sugar

rare earth

Greek (language)

noble gas; inert gas; I get the feeling that ...; I think that ...

dilute nitric acid

unusual; rare

rare element

dilute acid