(also optical indicatrix)
noun (plural indicatrices /-trɪsiːz/)Crystallography
An imaginary ellipsoidal surface whose axes represent the refractive indices of a crystal for light following different directions with respect to the crystal axes.
More example sentences
- Other contributions to differential geometry which occur in this work include his invention of the ‘Dupin indicatrix’ which gives an indication of the local behaviour of a surface up to the terms of degree two.
late 19th century: modern Latin, feminine of Latin indicator 'something that points out'.
Definition of indicatrix in:
- The US English dictionary