phosphate rock
noun
Rock containing a substantial amount of calcium phosphate (usually in the form of apatite).
Origin
Mid 19th century.
- let something into
- let something lie
- let something off
- let something out
- let something ride
- let something rip
- let something slide
- let something slip
- let something slip through one's fingers (or grasp)
- let's pretend
- let's say (or let us say)
- Lett
- lettable
- letter
- letterato
- letter balance
- letter ballot
- letter blindness
- letter board
- letter bomb
- letter bomber
- letter bombing
- letter book
- letter-bound
- letter box