petrosilex
/ˌpɛtrə(ʊ)ˈsʌɪlɛks/Geology. Now rare
noun
Any of various hard, compact, igneous or metamorphic rocks rich in silica; especially (a) hornstone or chert; (b) felsite.
Origin
Late 18th century. From German Petrosilex from petro- + classical Latin silex flint, pebble.
- potato scab
- potato scone
- potato-scoop
- potato set
- potato shop
- potato-sick
- potato skin
- potato spirit
- potato-spraying
- potato stalk borer
- potato stick
- potato stone
- potato straw
- potato top
- potato-trap
- potato tree
- potato tuber moth
- potato tuberworm
- potato vine
- potato wart
- potato whisky
- potato worm
- pot-au-feu
- Potawatomi
- pot-baker