mat·ri·lin·e·al 
(măt′rə-lĭnē-əl)
(măt′rə-lĭnē-əl)adj.
Relating to, based on, or tracing ancestral descent through the maternal line.
mat′ri·line·al·ly adv.
- actinically
- actinic ray
- actinide
- actinism
- actinium
- actino-
- actinobacterium
- actinoid
- actinolite
- actinometer
- actinometric
- actinometrical
- actinometry
- actinomorphic
- actinomorphous
- actinomorphy
- actinomyces
- actinomycete
- actinomycin
- actinomycin D
- actinomycosis
- actinomycotic
- actinon
- actinopterygian
- actinouranium