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Definition of Collarette
1. Noun. A small collar, especially as a kind of necklace of lace, fur etc. for women. ¹
2. Noun. A type of dahlia having a small collar of short inner petals. ¹
3. Noun. The jagged circle in the mid-diameter of the iris, separating the darker shade of the iris from the lighter shade of the iris. ¹
4. Noun. Rim of loosened keratin surrounding a skin lesion. ¹
¹ Source: wiktionary.com
Medical Definition of Collarette
1. The sinuous, scalloped line in the iris that divides the central pupillary zone from the peripheral ciliary zone and marks the embryonic site of the atrophied minor vascular circle of the iris. Synonym: iris frill. (05 Mar 2000)