- line-colored
- line complex
- line congruence
- line congruence theory
- line conic
- line connectivity
- line contour
- line coordinate
- line coordinates
- line core
- line-covering number
- line-critical graph
- line current
- line currents
- line cusp
- lined Chinese-style jacket
- Lined Dress with the Embroidery of a Red Ground,Gold Dragons and Polychrome Children of the Ming Dynasty
- line decoder
- line defect
- line deflection
- line density
- line disclination
- line-disjoint
- line displacement
- line distortion