silico-, silic-

(Latin: flint, quartz, sand; a crystalline compound [SiO2])

pneumonoultramicroscopicsilicovolcanoconiosis, pneumonoultramicroscopicsilicovolcanokoniosis
This is one of the longest words in the English language and is divided into the following segments: pneu, mono, ultra, micro, scopic, silico, volcano, coni, osis; and together they mean, "miner's lung disease", or "a disease of the lungs caused by the inhalation of very fine silicate, or quartz dust, and occurring especially in the lungs of miners".
silex
silica
silicate
silicatosis
siliceous
silicic
siliciferous
silicify
silicious
silicity
silicoflagellate
silicoflouric
silicole (verb), silicoles; silicoled; silicoling
Living in soil rich in silica or silicates, containing, resembling, relating to, or consisting of a white or colorless crystalline; such as, sand, quartz and other minerals used to manufacture glass, concrete and other materials.
silicon

Other related "sand" units: amatho-; ammo-; areni-; thino-.