in·li·er 
(ĭnlī′ər)
(ĭnlī′ər)n.
An area or formation of older rocks completely surrounded by younger layers.
[IN1 + (OUT)LIER.]
- authorization
- authorize
- Authorized Version
- authorizer
- authorship
- autism
- autism spectrum
- autism spectrum disorder
- autist
- autistic
- autistically
- autistic savant
- auto
- auto-
- autoantibody
- autoantigen
- autobahn
- autobiographer
- autobiographic
- autobiographical
- autobiographically
- autobiography
- autobus
- autocatalysis
- autocatalytic