(physics) the Raman effect

(analytical chemistry) A form of spectroscopy that uses the Raman effect to study low-frequency vibrational and rotational modes of molecules.

(usually countable) A tall, tropical Asian perennial herb, Boehmeria nivea, cultivated for its fibrous stems.

(Canada, US, Australia) A segment of roadway that directs vehicular traffic from local roads onto a freeway. / introduction, introductory course

(Canada, US, Australia) A segment of roadway that directs vehicular traffic from a freeway onto local roads. / (by extension) An exit strategy.

(aeronautics) A jet engine in which forward motion forces air into an inlet, compressing it (as opposed to having a pump type device compressing the air for combustion with fuel), and where combustion is subsonic.

(informal) A fictional name for technology that reproduces odor.

(idiomatic) behaving violently or rioting

(physics) The differential Raman scattering of left and right circularly polarized light by chiral molecules.

(intransitive) To increase rapidly to a new value. / (transitive) To increase (something) rapidly to a new value; to cause (something) to ramp up.