aphotic zone

noun 0.794

littoral zone

noun 0.639

photophase

noun 0.635

photosphere

noun 0.617

intertidal zone

noun 0.591

biozone

noun 0.578

photophore

noun 0.578

phototroph

noun 0.574

habitable zone

noun 0.551

transition zone

noun 0.547

limnetic

noun 0.543

zone of action

noun 0.543

phytoplankton

noun 0.541

phot

noun 0.540

zone

noun 0.540

phototube

noun 0.538

photovoltage

noun 0.535

photon

noun 0.532

zone of fire

noun 0.526

photosystem

noun 0.522

photonics

noun 0.521

photoperiod

noun 0.519

torrid zone

noun 0.518

visible light

noun 0.517

photosite

noun 0.513

photoreceptor

noun 0.513

zone plate

noun 0.511

photolysis

noun 0.510

subduction zone

noun 0.509

photodiode

noun 0.509

visible spectrum

noun 0.507

phototransduction

noun 0.507

photopigment

noun 0.506

midwater

noun 0.506

infralittoral

noun 0.506

photobiology

noun 0.503

phototransistor

noun 0.502

biophotolysis

noun 0.501

photophosphorylation

noun 0.501