1
Stage 1 of 2
laborare
Latin · classical
"to work"
'to work, toil', from labor
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Stage 2 of 2
laboratory
English · 1590s
"place for experiments"
via Medieval Latin laboratorium, a workshop, often an alchemist's; Justus von Liebig's teaching laboratory at Giessen, opened in 1824, became the model for university science labs
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