| Title | optical |
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Merriam-Webster's Collegiate Dictionary op·ti·cal \\ˈäp-ti-kəl\\ adjective DATE 1570 1. of or relating to the science of optics 2. a. of or relating to vision : visual b. visible 1 optical wavelength c. of, relating to, or being objects that emit light in the visible range of frequencies an optical galaxy d. using the properties of light to aid vision an optical instrument 3. a. of, relating to, or utilizing light especially instead of other forms of energy optical microscopy b. involving the use of light-sensitive devices to acquire information for a computer optical character recognition 4. of or relating to optical art • op·ti·cal·ly \\-k(ə-)lē\\ adverb English Etymology optical 1560s, from optic. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 optical op·tic·al / 5Cptikl; NAmE 5B:p- / adjective[usually before noun] 1. connected with the sense of sight or the relationship between light and sight 视力的；视觉的；光学的: optical effects 视觉效果 2. used to help you see sth more clearly 有助于视力的；光学的: optical aids 助视器 optical instruments such as microscopes and telescopes 显微镜和望远镜等光学仪器 3. (computing 计) using light for reading or storing information 光读取的；光存贮的: optical storage 光存贮器 an optical disk 光盘 • op·tic·al·ly / -kli / adv. Webster's Third New International Dictionary, Unabridged Search result show the entry is found in: optical activity , or optical anomaly , or optical antipode , or optical axis , or optical bench , or optical bleach , or optical calcite , or optical center , or optical constant , or optical contact , or optical correction , or optical density , or optical double star , or optical electron , or optical flat , or optical gage , or optical glass , or optical haze , or optical inversion , or optical isomer , or optical isomerism , or optical lever, or optical maser , or optical microscope , or optical path , or optical printer , or optical pyrometer , or optical rotation , or optical section , or optical square , or optical system , or optical train , or optical wedge , or positive optical activity , or quasi-optical , or optical art , or optical computer , or optical disk , or optical fiber , or optical double , or optical orientation , or optical pair , or electron-optical op·ti·cal I. \-tə̇kəl, -tēk-\ adjective Etymology: in sense 1, from optic (II) + -al; in other senses, from optic (I) + -al 1. a. : relating to the science of optics b. : dealing with or expert in optics 2. : relating to vision : ocular , visual < an optical illusion > 3. a. : designed or constructed to aid the vision < an optical magnifier > b. : acting by means of light or in accord with the principles of optics II. adjective 1. a. : visible 1a < optical wavelength > b. : of, relating to, or being objects that emit light in the visible range of frequencies < an optical galaxy > < optical astronomy > 2. a. (1) : of, relating to, or utilizing light especially instead of another form of energy < optical microscopy > (2) : using lasers < optical storage for a computer > b. : involving the use of light-sensitive devices to acquire information for a computer < optical character recognition > 3. : of or relating to optical art |
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