- crosscovariance matrix
- crosscut of a domain
- crossed homomorphism
- crossed product
- crossed representation
- crossed system
- crossing number
- crossing problem
- cross multiplication
- cross multiplication
- cross of sets
- cross-over design
- crossover point of two straight lines
- cross-phase modulation
- cross product
- cross product in Boolean algebra
- cross ratio
- cross ratio
- cross ratio of pencil of lines
- cross ratio of pencil of planes
- cross section
- cross-section
- cross-section analysis
- cross section of a relation
- cross section of a sphere