C

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Cartesian product
center
centralizer
centred lattices
CIF
complex
conjugacy class

constrained refinement

corresponding twins
coset
Cromer–Mann coefficients
crystal
crystal family
crystal pattern
crystal system
crystallographic basis
Crystallographic Information File
Crystallographic Information Framework
crystallographic orbit
crystallographic symmetry
Curie laws
cylindrical system