To convert (a substance) into a different state or form. transitive. Chemistry and Metallurgy. To transform (a substance) into a different physical…

To soften. To dissolve in acid. Obsolete.

transitive. Chiefly Alchemy and Chemistry. To throw or cast (a substance) in, into, on, or upon something. Obsolete.

transitive. To make brown; to roast brown; to give (by a chemical process) a dull brown lustre to gun-barrels or other polished iron surfaces.

transitive. To convert (a material) into or reduce to a volatile or rarefied substance. Obsolete.

transitive. To melt or fuse together. Also figurative.

transitive. To cause to disperse again.

To take up, absorb, or assimilate (a gas, rays of heat or light, etc.); to take (solid substances) into solution or suspension.

transitive. Chemistry. To isolate (a substance) from a compound or mixture in which it is present; to extract. Cf. educt, n. 2.

To throw off, e.g. to empty out, the contents of a vessel by tilting it up. to cant off: to decant.

intransitive. With with. To let go, give up, surrender; to send away, dismiss. Also (of a body or substance): to lose, give off heat, a…

transitive. Chemistry. To convert (aqua fortis) into aqua regia. Obsolete.

To take the sharp edge off; to reduce the acrimony of (corrosive liquids). Obsolete.

transitive. To subject (alum) to a process of recrystallization. Cf. roche alum, n.

transitive. To reduce to small fragments, to pulverize. Obsolete.

transitive. Chemistry. To make chemically neutral; to eliminate the acidity or alkalinity of (a substance).

transitive. Chiefly Chemistry. To liberate (a substance) from a bound chemical state; to generate or release (a substance, esp. a gas) as a…

transitive. Chiefly Chemistry. To give off or emit (gas, heat, etc.) as a product of chemical, physiological, or other internal action; to liberate…

Chemistry. To liberate, disengage (gas, etc.) from a state of combination.

Of a gland: To secrete. Of a material substance: To give off or emit from itself. ? Obsolete.

transitive. To restore from the effects of burning.

transitive. To take away, out, by percolation. Also figurative.

transitive. To render (alcoholic spirits) unfit for drinking by the addition of methanol; to mix with methanol. See earlier methylated, adj. Now rare.

transitive. Originally: to treat, impregnate, or combine with nitric acid. Now: spec. to introduce one or more nitro groups into (a compound or…

transitive. To treat with nitric acid, nitrate fertilizer, etc.

In various technical uses: To bring to the desired quality or condition. To neutralize (an acid) by means of an alkali.

transitive and intransitive. To undergo, or to cause to undergo, deflocculation.

Biochemistry. To cause (a subunit of a macromolecule) to combine with, or become attached to, a complementary subunit of the same or a very similar…