Word Study
[2x]
: Pâ Pæ Pè Pé Pœ P- P. P/ P< Pa Pb Pc Pd Pe Pf Ph Pi Pj Pk Pl Pm Pn Po Pp Pr Ps Pt Pu Pv Pw Px Py
photic region
CIDE DICTIONARY
photic region,
The uppermost zone of the sea, which receives the most light. [Webster 1913 Suppl.]
For further exploring for "photic region" in Webster Dictionary Online