List of 15-letter words beginning with

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There are 13 fifteen-letter words beginning with OPTI

optical␣activity — n. (Physics) a property caused by asymmetrical molecular or crystal… — n. (Chemistry) A measure of the amount of optical rotation produced…
optical␣delusion — n. (Dated) A vision or image that is deceptive or misleading…
optical␣illusion — n. An image that is visually deceptive or misleading.
optically␣active — adj. (Chemistry, of a crystal or compound) Exhibiting optical activity.
optical␣rotation — n. (Physics) The rotation of the plane of polarization of plane…
optical␣spectrum — n. The colours of the rainbow. — n. (Physics) The distribution of colours produced when white light… — n. (Astronomy, physics) The range of frequencies of visible light.
optical␣switches — n. Plural of optical switch.
optical␣trackpad — n. An input device consisting of a small surface with an optical…
optical␣tweezers — n. A scientific instrument that uses lasers to manipulate objects…
opticopneumatic — adj. Having both optic and pneumatic elements.
optimalisations — n. Plural of optimalisation.
optimalizations — n. Plural of optimalization.
optionalization — n. The process of making something optional.

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