Stratified \Strat"i*fied\, a. Having its substance arranged in strata, or layers; as, stratified rock.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Stratify \Strat"i*fy\, v. t. [imp. & p. p. Stratified; p. pr. & vb. n. Stratifying.]

[Stratum + -fy: cf. F. stratifier.]

To form or deposit in strata, or layers, as substances in the earth; to arrange in strata.

Source: Webster's Revised Unabridged Dictionary (1913)