UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ælˈvɪələs/US:USA pronunciation: respellingUSA pronunciation: respelling(al vēə ləs)

Inflections of 'alveolus' (nnoun: Refers to person, place, thing, quality, etc.): nplplural noun: Noun always used in plural form--for example, "jeans," "scissors.": alveoli

WordReference Random House Unabridged Dictionary of American English © 2020
al•ve•o•lus  (al vēə ləs),USA pronunciation n., pl.  -li 
    (al vēə ləs),USA pronunciation 
  1. Anatomya little cavity, pit, or cell, as a cell of a honeycomb.
  2. Anatomyan air cell of the lungs, formed by the terminal dilation of tiny air passageways.
  3. Anatomyone of the terminal secretory units of a racemose gland.
  4. Anatomy, Dentistrythe socket within the jawbone in which the root or roots of a tooth are set.
  • Latin, equivalent. to alve(us) concave vessel + -olus -ole1
  • 1700–10

Collins Concise English Dictionary © HarperCollins Publishers::
alveolus /ælˈvɪələs/ n ( pl -li / -ˌlaɪ/)
  1. any small pit, cavity, or saclike dilation, such as a honeycomb cell
Etymology: 18th Century: from Latin: a little hollow, diminutive of alveus
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