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dwell time UK US noun [U]
► MARKETING how long people are likely to spend looking at an advertisement, buying goods, etc., especially while they are waiting somewhere such as an airport or train station: »
The average user dwell time on these ads was 4.7 seconds.
»Why put the stores in railways stations where dwell time is limited, rather than in airports where people are routinely waiting for hours?
Financial and business terms. 2012.