Look up: conchoidal

1. conchoidal
   smooth, concave, shell-like fractures characteristic of, for example, glass and quartz.
   Found on http://www.cst.cmich.edu/users/dietr1rv/
   
   
2. Conchoidal
   A distinctive fracture pattern and one displayed by broken glass. The mineral breaks with a concave or convex surface often showing concentric ridges looking like growth lines on a shell.
   Found on http://www.quartznall.co.uk/azhealthguid
   
   
3. Conchoidal
   Con·choid'al adjective [ Confer French conchoïdal .] (Min.) Having elevations or depressions in form like one half of a bivalve shell; -- applied principally to a surface produced by fracture.
   Found on http://www.encyclo.co.uk/webster/C/127
   
   
4. conchoidal
   Shaped like a shell; having alternate convexities and concavities on the surface. ... Origin: concha + G. Eidos, appearance ... (05 Mar 2000) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
5. Conchoidal
   • (a.) Having elevations or depressions in form like one half of a bivalve shell; -- applied principally to a surface produced by fracture.
   Found on http://thinkexist.com/dictionary/meaning
   
   
6. conchoidal
   conchoidal 1. Used to describe fracture surfaces in rocks and minerals that are concave or convex and shaped like shells. 2. Having or being a surface shaped like a bivalve shell with smooth ridges and depressions; such as, conchoidal fracture. 3. Relating to, or being a surface characterized by ...
   Found on http://www.wordinfo.info/words/index/inf
   
   
7. conchoidal
   Type: Term Pronunciation: kon-koy′dăl Definitions: 1. Shaped like a shell; having alternate convexities and concavities on the surface.
   Found on http://www.medilexicon.com/medicaldictio