- a very hard sedimentary rock, similar to chert, composed essentially of microcrystalline quartz.
Origin of novaculite
1790–1800; < Latin novācul(a) a sharp knife, razor + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for novaculite
The finest of the novaculite rocks of central Arkansas are quarried near the city.
- a fine-grained dense hard rock containing quartz and feldspar: used as a whetstone
C18: from Latin novācula sharp knife, razor, from novāre to renew