What is "eduction"

Eduction \E*duc"tion\, n. [L. eductio.] The act of drawing out or bringing into view.

Eduction pipe, & Eduction port. See Exhaust pipe and Exhaust port, under Exhaust, a.

n. 1 The act of educe, of deducing: deduction. 2 The result of educe; something which has been educed; inference, deduction. 3 (lb en geology) A process by which the Earth's crust spreads sideways and exposes deep-seated rocks.

Eduction may refer to:

• Eduction (geology)
• A type of inductive inference from premises mentioning particulars to a conclusion mentioning another particular. See inductive reasoning.
• Aspirator (pump)

In geology, eduction is a process in which the Earth crust spreads sideways, exposing deep-seated rocks.

It is prominent in middle layers of the Himalayas, where gravity pushes the mountains down. Together with a high grade of erosion, this activity brings deep rocks to the surface, many from more than a depth of 100 km. The unusually fast elevation preserves rare metastable minerals, e.g. diamonds and coesite.