Definitions for ptosisˈtoʊ sɪs; -siz

This page provides all possible meanings and translations of the word ptosis

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. ptosis(noun)

    drooping of the upper eyelid caused by muscle paralysis and weakness

WiktionaryRate this definition:(0.00 / 0 votes)

  1. ptosis(Noun)

    The prolapse of a bodily organ, especially drooping of the eyelid.

  2. Origin: From πτωσις.

Webster DictionaryRate this definition:(0.00 / 0 votes)

  1. Ptosis(noun)

    drooping of the upper eyelid, produced by paralysis of its levator muscle

  2. Origin: [NL., fr. Gr. ptw^sis a falling.]

FreebaseRate this definition:(0.00 / 0 votes)

  1. Ptosis

    Ptosis is a drooping or falling of the upper or lower eyelid. The drooping may be worse after being awake longer, when the individual's muscles are tired. This condition is sometimes called "lazy eye", but that term normally refers to amblyopia. If severe enough and left untreated, the drooping eyelid can cause other conditions, such as amblyopia or astigmatism. This is why it is especially important for this disorder to be treated in children at a young age, before it can interfere with vision development.


Find a translation for the ptosis definition in other languages:

Select another language:

Discuss these ptosis definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"ptosis." STANDS4 LLC, 2015. Web. 25 Apr. 2015. <>.

Are we missing a good definition for ptosis? Don't keep it to yourself...

The Web's Largest Resource for

Definitions & Translations

A Member Of The STANDS4 Network

Nearby & related entries:

Alternative searches for ptosis:

Thanks for your vote! We truly appreciate your support.