Synonym: descent, origin. Similar words: extracting, traction, extract, attraction, subtraction, extradition, fraction, refraction. Meaning: [-kʃn] 
n. 1. the process of obtaining something from a mixture or compound by chemical or physical or mechanical means 2. properties attributable to your ancestry 3. the act of pulling out (as a tooth).
n. 1. the process of obtaining something from a mixture or compound by chemical or physical or mechanical means 2. properties attributable to your ancestry 3. the act of pulling out (as a tooth). 
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151. Recently, BCI developed rapidly, and its researches mostly concentrated on feature extraction and translation algorithm.
152. This review outlines the progress of the types, occurrence, structures, extraction, separation, bio-assay and induction of Solanaceous phytoalexins. The future perspective is also discussed.
153. To improve the region extraction accuracy, propose a novel method based on advanced active contour model for employing the apriori knowledge of the license plate.
More similar words: extracting, traction, extract, attraction, subtraction, extradition, fraction, refraction, infraction, diffraction, interaction, practitioner, transaction, attractive, retractile, unattractive, fractious, action, extinction, faction, reaction, in action, extra, take action, benefaction, stupefaction, satisfaction, putrefaction, course of action, extraneous.