silex /sīˈleks/

1. Silica or quartz
2. A heat-resistant and shock-resistant glass formed of fused quartz

• cirriped
• cirripede
• cirripedes
• Cirripedia
• cirripeds
• cirro-cumuli
• cirro-cumulus
• cirrose
• cirro-strati
• cirro-stratus
• cirrous
• cirrus
• cirsoid
• ciré
• cirés
• cis-
• CIS
• cablegram
• cablegrams
• cable-laid
• cable-length
• cable-lengths
• cable-moulding
• cable-mouldings
• cable railway