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We found 11 dictionaries with English definitions that include the word optical crown:
Click on the first link on a line below to go directly to a page where "optical crown" is defined.

General (10 matching dictionaries)

1. optical crown: Collins English Dictionary [home, info]
2. optical crown: Vocabulary.com [home, info]
3. optical crown: Dictionary.com [home, info]
4. optical crown: UltraLingua English Dictionary [home, info]
5. optical crown: Rhymezone [home, info]
6. optical crown: Free Dictionary [home, info]
7. optical crown: Mnemonic Dictionary [home, info]
8. optical crown: WordNet 1.7 Vocabulary Helper [home, info]
9. optical crown: LookWAYup Translating Dictionary/Thesaurus [home, info]
10. optical crown: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

11. optical crown: Encyclopedia [home, info]

(Note: See optical_crowns for more definitions.)

Quick definitions from WordNet (optical crown) ▸ noun:  optical glass of low dispersion and low refractive index ▸ Also see optical_crowns ▸ Words similar to optical crown ▸ Usage examples for optical crown ▸ Words that often appear near optical crown ▸ Rhymes of optical crown ▸ Invented words related to optical crown