ptilosis

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Speech
ptilosis
Definition
Noun 
Ornithology
The appearance or study of feathers on a bird, including factors such as their texture or shape.
Etymology
Meaning note
ornithology
Noun 
Medicine
Loss of the eyelashes, due to ulceration or other damage to the follicles.
Usage note
In ornithology, ptilosis refers to the properties of the feathers themselves, while pterylosis refers to the arrangement of those feathers and how they are implanted in the skin. In medicine, ptilosis refers specifically to the eyelashes, while madarosis can also apply to the eyebrows, and alopecia can apply to hair loss in any part of the body. English terms derived from New Latin. English terms borrowed from New Latin. English terms derived from Ancient Greek. English lemmas. English nouns. English uncountable nouns. English countable nouns. en:Ornithology. en:Medicine.
Etymology
Meaning note
medicine
Noun Verb Adjective Adverb Other
Etymology
Borrowing from New Latin ptilōsis, from the Ancient Greek πτῐ́λωσῐς ‎(ptílōsis).
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