Search by letter in the English dictionary

1709101-1709200 most frequent sentences

optical absorption optical access optical activity optical adapter optical amplification optical amplifier optical amplifiers optical analysis optical and electrical optical and electronic optical and mechanical optical apparatus optical applications optical arrangement optical article optical assembly optical astronomy optical audio optical axes optical axis optical beam optical bench optical block optical brightener optical brighteners optical brightening optical cable optical cables optical camouflage optical cavity optical cell optical center optical channel optical channels optical character optical character recognition optical characteristics optical circuit optical circulator optical cladding optical clarity optical co optical coating optical code optical coherence optical coherence tomography optical combiner optical communication optical communication system optical communication systems optical communications optical component optical components optical confinement optical connection optical connector optical connectors optical control optical correction optical coupler optical couplers optical coupling optical crystal optical data optical data storage optical delay optical densities optical density optical depth optical design optical detection optical detector optical detectors optical device optical devices optical digital optical digital audio optical disc optical discs optical disk optical disks optical display optical distortion optical distribution optical drive optical drives optical effect optical effects optical element optical elements optical emission optical encoder optical energy optical engineering optical equipment optical feedback optical fiber optical fiber cable optical fiber cables