la ‧ bor ‧ a ‧ tory W3 /ləˈbɒrətri $ ˈlæbrətɔːri/ BrE AmE noun ( plural laboratories ) [countable]
[ Date: 1600-1700 ; Language: Medieval Latin ; Origin: laboratorium , from Latin laborare 'to work' ]
a special room or building in which a scientist does tests or prepares substances:
a research laboratory
laboratory tests/experiments/studies
tests on laboratory animals
⇨ ↑ language laboratory