sphene 
(sfēn)
(sfēn)n.
A titanium accessory mineral in some granite and metamorphic rocks, CaTiSiO5, occurring in usually small brown, yellow, or green crystals and sometimes used as a gemstone. Also called titanite.
[French sphène, from Greek sphēn, wedge.]
- lose it
- losel
- lose-lose
- lose (one's) head
- lose one's head
- lose (one's) heart to
- lose one's heart to
- lose (one's) shirt
- lose one's shirt
- lose (one's) tongue
- lose one's tongue
- lose out
- lose out on
- loser
- lose shirt
- lose time
- lose tongue
- losing
- losingest
- loss
- loss leader
- loss ratio
- lost
- lost and found
- lost-and-found