M

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

Mallard's law
mapping
mass attenuation coefficient
maximum likelihood
merohedral
merohedry
mesh
mesocrystal
metric specialization
metric tensor
Miller indices
modular crystal structure
modulated crystal structure
molecular replacement
morphotropism
mosaic crystal
multi-electron excitation
multiwavelength anomalous diffraction (MAD)