Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z opsophagos A glutton, a gourmand, chiefly one who hogs and eats excessive amounts of fish. opster An artist who creates op art. Opsterland A municipality of Friesland, Netherlands. opt To choose; select. optable That may or should be chosen; desirable. optacon An electromechanical device that selectively raises small rods over the darker parts of a document, and thus enables blind people to read printed material that has not been transcribed into Braille. optant A person who lives in a region undergoing a change of sovereignty and thus may choose between retaining their old citizenship or opting for the citizenship of the new sovereignty. optate To choose, settle on, opt. optation A wish; a desire. optative Expressing a wish or a choice. optatively In an optative way. OPTEMPO Clipped compound of operations tempo. opter One who opts, or makes a choice. opthaldehyde ortho-phthalaldehyde optic Of, or relating to the eye or to vision. optical Of or relating to sight; visual. opticality The quality of being optical, or apprehended through sight. optically regarding or using optics opticalman A member of the navy who specialized in the use of optical tools. opticals spectacles optician A person who makes, dispenses or sells lenses and spectacles (glasses). opticianry The professional field of working as an optician. opticians An optometry practice. opticist One who studies optics. opticity The degree of optical activity of a solution opticochemical Relating to the chemistry of the eye. opticokinetic optokinetic opticopneumatic Having both optic and pneumatic elements opticospinal Of, pertaining to, or affecting the optic nerve and the spinal cord optics The physics of light and vision: basic optical science. optigraph A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes by means of an attached pencil. optimacy government by the nobility optimal The best, most favourable or desirable, especially under some restriction. optimalism The doctrine that this universe exists because it is better than the alternatives. optimality The property of being optimal. optimally In an optimal manner. optimate A member of the patrician ruling class in republican Ancient Rome; an aristocrat, a noble. optimation optimization. optime A student who graduates with second class ("senior optime") or third class ("junior optime") honours in mathematics, or (loosely) in any other subject. optimedin A particular olfactomedin optimeter A form of interferometer used in the measurement of gauge blocks. optimific producing the optimum outcome optimism A tendency to expect the best, or at least, a favourable outcome. optimist A person who expects a favourable outcome. optimistic Expecting the best in all possible ways. optimistical optimistic optimistically In an optimistic manner. optimity The state of being best. optimizable Capable of being optimized. optimization The design and operation of a system or process to make it as good as possible in some defined sense. optimizational Relating to optimization optimize To act optimistically or as an optimist. optimized that has undergone optimization optimizer A person in a large business whose task is to maximize profits and make the business more efficient. optimizing Carrying out optimization. optimum The best or most favorable condition, or the greatest amount or degree possible under specific sets of comparable circumstances. Optimus A pet name for a device, such as a car, computer, or robot. optineurin A protein that is associated with glaucoma option One of a set of choices that can be made. optionable Of or pertaining to options on a stock or equity. For some stocks, it is possible to trade options on them, hence they are optionable, for other stocks options aren't traded so they are not optionable. optionaire A person whose wealth consists of or was made through stock options. optional Not compulsory; left to personal choice; elective. optionality The value of additional optional investment opportunities available only after having made an initial investment. optionalization The process of making something optional. optionalize To make optional; to add as an option, permit to be optionally omitted, or provide various options for implementing. optionally In an optional manner; not mandatorily. optionary optional optioned Having the specified kind or number of options. optionee The purchaser of a financial option. optioneering in-depth consideration of various alternatives to find the best or preferred option optionless Without an option. optionlessness Absence of options. optionlike Resembling or characteristic of an option. optionor The grantor of a financial option. optivar azelastine optoacoustic Describing any of several interactions between light and sound optoacoustically In an optoacoustic way. optoacoustics optoacoustic interactions generally optobiology optica biology optobionic optically bionic optocapillary Relating to the interaction of light on capillary effects optochemical Relating to the chemical processes involved in sight or vision optochemokine A chemokine that is activated by light optochiasmatic Relating to the optic chiasm. optochin ethylhydrocupreine optociliary retinochoroidal optocoele A cavity of an optic lobe, found in the brain in many animals, including fish. optocollic Relating to the eye and the neck, but especially to the avian reflex that holds the head steady during flight optocoupled coupled by means of an optocoupler optocoupler An optoisolator. optode An optical sensor device that optically measures a specific substance. optodynamic Of or pertaining to optodynamics optodynamics A range of dynamic measurement techniques that use small lasers. optoeject To optically eject optoejection optical ejection optoelectric Of or pertaining to the conversion of light energy into electricity optoelectrically In an optoelectric manner optoelectroactive optically electroactive optoelectrode An optoelectric electrode optoelectromechanical optoelectric and electromechanical optoelectronic Of or pertaining to optoelectronics. optoelectronically By means of optoelectronics optoelectronics The branch of physics that deals with the interaction of light with electronic devices, or the production of light from such devices optoepigenetic Whose epigenetic activity is modulated by light optofluidic Of or pertaining to optofluidics optofluidics The science of optical devices incorporating fluids, especially such microfluidic devices optogalvanic Describing any effect of light upon the electrical conductivity of a material optogenetic generated by light optogenetically In an optogenetic manner optogenetics A science that combines optics and genetics, aiming at controlling cellular processes with light. The cells are made responsive to light using genetics and then activated using specific wavelengths. optogram An image of external objects fixed on the retina by the photochemical action of light on rhodopsin. optography The production of an optogram on the retina by the photochemical action of light on rhodopsin, which is seen as the fixation of an image in the eye. optoinject To optically inject optoinjectant A material that is optoinjected optoinjection optical injection, photoinjection (of nucleic acids) optoisolated isolated by means of an optoisolator optoisolation isolation of part of an electrical circuit by means of an optoisolator optoisolator A device that transmits a signal optically between two isolated electronic circuits optokinesis The movement of the eye in response to an external stimulus optokinetic Of or pertaining to movement of the eyes optokinetically In an optokinetic manner optological Of or relating to optology. optologist One who studies optology. optology The study of sight. optomagnetic optical and magnetic; related to optomagnetism optomagnonic Relating to optical magnons or to optomagnonics optomagnonics The study of optical magnons optomechanical Of or pertaining to optomechanics optomechanically By means of, or in terms of, optomechanics. optomechanics The design and manufacture of precision mechanical components of optical devices optomechatronic Of or relating to optomechatronics. optomechatronics The integration of optical components and technology into mechatronic systems. optometer An instrument for measuring the focus of the lens of the eye. optometric Of or pertaining to optometry optometrical Of or pertaining to optometry. optometrically In an optometric way. optometrics optometry optometrist A person trained and skilled in examining and testing the eyes for defects, in order to prescribe corrective lenses or treatment. optometry The art and science of vision and eye care. optomotor Describing movement of the eye, head or body (especially of insects) that steadies the field of vision optophobia The fear of opening one's eyes. optophone A device that transforms light into sound. optophysiological Relating to optophysiology optophysiology The physiology of the action of light optoplasmonic optical and plasmonic optoporation Synonym of photoporation. optosensing optical sensing / monitoring, typically via optical fibre technology optospectroscopic Relating to optical spectroscopy optospintronic Related to optospintronics optospintronics The (study of the) interaction of light with spin polarization (spintronics)