bn:00020660n
Noun Concept
EN
collimator
EN
A small telescope attached to a large telescope to use in setting the line of the larger one WordNet 3.0
Definitions
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EN
A small telescope attached to a large telescope to use in setting the line of the larger one WordNet 3.0 & Open English WordNet
A small telescope attached to a larger one, used to point it in the correct general direction. Wiktionary
DERIVATION
WordNet 3.0 & Open English WordNet
Wiktionary