opsin

noun 0.780

bacteriorhodopsin

noun 0.746

rhodamine

noun 0.678

photoreceptor

noun 0.660

photopigment

noun 0.656

retinal

noun 0.644

rod cell

noun 0.615

phototransduction

noun 0.597

retinol

noun 0.593

retina

noun 0.590

rhododendron

noun 0.588

photoreception

noun 0.574

retinula

noun 0.574

retinoscope

noun 0.570

rhodochrosite

noun 0.570

visual purple

noun 0.568

retinene

noun 0.563

phytochrome

noun 0.562

photoprotein

noun 0.555

retinaldehyde

noun 0.551

rod

noun 0.543

rubredoxin

noun 0.536

chlorophyll

noun 0.533

rhodium

noun 0.531

retinitis

noun 0.530

photoresistor

noun 0.530

photodiode

noun 0.530

cryptochrome

noun 0.530

protanopia

noun 0.529

photosensor

noun 0.528

rotenone

noun 0.526

achromatopsia

noun 0.525

rood

noun 0.523

electroretinography

noun 0.521

retinex

noun 0.519

rhodonite

noun 0.517

ophthalmoscope

noun 0.516

cone cell

noun 0.515

actinorhodin

noun 0.514

ribosome

noun 0.514

hemoglobin

noun 0.514

erythrocyte

noun 0.513

photodetector

noun 0.513

phototransistor

noun 0.511

chromophore

noun 0.510

phycoerythrin

noun 0.509

rog

noun 0.509

choroid

noun 0.507

rot

noun 0.507

retinoscopy

noun 0.506

retinopathy

noun 0.506

ryanodine

noun 0.505

rhodolith

noun 0.505

myoglobin

noun 0.505

photoresist

noun 0.504

phototroph

noun 0.503

rhotic

noun 0.503

erythrosine

noun 0.502

erythropoietin

noun 0.500