cryptogam |
any of the plants, such as ferns and algae, that bear no flowers or seeds, reproducing instead by spores. |
cryptogram |
a message written so as to conceal its meaning by the use of a cipher or code. [2 definitions] |
cryptography |
the science or art of creating and decoding secret messages, esp. those employing ciphers and codes. [2 definitions] |
cryptozoic |
(cap.) of or pertaining to Precambrian rock strata yielding few and very primitive fossils. [3 definitions] |
crystal |
a naturally symmetrical or layered solid, such as diamond or quartz, with a regularly repeating three-dimensional atomic, ionic, or molecular structure. [7 definitions] |
crystal ball |
a globe of glass or quartz crystal used by fortune-tellers to foretell events in the future. |
crystal detector |
a simple radio receiver made of a semiconducting crystal touched by a fine wire. |
crystal gazing |
the practice of studying and interpreting images of future events, supposed to appear in a ball of polished glass or crystal. |
crystalline |
of or made of crystal. [3 definitions] |
crystalline lens |
a transparent, biconvex, lenslike body in the eye, between the iris and the vitreous humor, that focuses light on the retina. |
crystallite |
a tiny crystal that typically forms as a material cools. |
crystallize |
to convert into or cause to become crystals. [4 definitions] |
crystallo- |
crystal. |
crystallographic |
of, pertaining to, or involving the study of crystals. |
crystallography |
the science of the formation, composition, and characteristics of crystals. |
crystalloid |
a crystallizable substance that dissolves in liquid and passes easily through animal and vegetable membranes. [3 definitions] |
crystal pickup |
a phonograph pickup that used a piezoelectric crystal. |
crystal set |
an early form of radio receiver that used a crystal detector. |
cry uncle |
to yield; give up. |
cry wolf |
to give a false alarm. |
Cs |
symbol of the chemical element cesium. |