dwell on

Collins Concise English Dictionary © HarperCollins Publishers::

dwell on, dwell upon vb

dwell /dwɛl/USA pronunciation v. [no object], dwelt /dwɛlt/USA pronunciation or dwelled, dwell•ing.

to live or stay as a permanent resident;
reside:He dwells in the country for most of the year.
dwell on or upon, [~ + on/upon + object] to think, speak, or write about for a long time or often:She dwelt at length on the similarities between the two paintings.

dwell (dwel),USA pronunciation v., dwelt or dwelled, dwell•ing, n.
v.i.

to live or stay as a permanent resident;
reside.
to live or continue in a given condition or state: to dwell in happiness.
to linger over, emphasize, or ponder in thought, speech, or writing (often fol. by on or upon): to dwell on a particular point in an argument.
(of a moving tool or machine part) to be motionless for a certain interval during operation.

[Mach.]
- Mechanical Engineeringa flat or cylindrical area on a cam for maintaining a follower in a certain position during part of a cycle.
- Mechanical Engineeringa period in a cycle in the operation of a machine or engine during which a given part remains motionless.

bef. 900; Middle English dwellen to lead astray, stun, abide, Old English dwellan to lead or go astray, hinder; cognate with Old Norse dvelja

dwell′er, n.

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