objective lens

objective lens

noun Optics.
objective ( def 3 ).
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WordNet
objective lens

noun
the lens or system of lenses in a telescope or microscope that is nearest the object being viewed [syn: objective
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Objective lens is always a great word to know.
So is doohickey. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a gadget; dingus; thingumbob.
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