Phal­lic is fairly com­mon. Yonic, vul­vic, or labial were sug­gested as an­to­nyms.

What is the word to de­scribe the breast’s shape?

We cover up three ar­eas: the male groin, the fe­male groin, and the fe­male chest. Why are there spe­cial words for the first two but not the last one?

  • 8
    Why should every word have an identical set of word forms or equivalents? There's nothing wrong with a breast-shaped dome. Dec 29, 2018 at 20:34
  • 4
    Don’t you really mean to ask why it is that you don’t know them? :) This is hard for us to answer. I’ve edited your question to be a what question not a why question to make it more answerable.
    – tchrist
    Dec 29, 2018 at 21:11
  • 6
    Is a breast not mammary?
    – Andrew Leach
    Dec 29, 2018 at 21:13
  • 2
    @JasonBassford Fancy that!
    – tchrist
    Dec 30, 2018 at 0:53
  • 21
    There is no word for the female breast shape because there is no such thing as the female breast shape. Entire scientific careers have been spent on trying to categorize them. That one German guy counted 28. Not variations, top-level categories. Which category exactly are you looking to name? Because he does have a dedicated term for every single one.
    – RegDwigнt
    Dec 30, 2018 at 1:20

8 Answers 8


Mammillar and Mamillary are (apparently) used to refer to things that are breast or nipple shaped (but are not breasts or nipples).

The non-OED Oxford dictionaries (for mammillary):

Shaped like or resembling a breast or nipple

The free dictionary (for mammillar):

(Biology) resembling a breast or nipple


The term you're looking for is breast-shaped.


Winter Park may buy breast-shaped building on Lee Road (Orlando Sentinel, 2014)

During the colonial and early American periods, the mountain was known as "Mamelle" mountain. "Mamelle" is a name commonly applied in the French-speaking parts of the world to a breast or any breast-shaped hill. (Encyclopedia of Arkansas History & Culture, 2016)

Is the breast-shaped shadow on St. Mary’s Cathedral an accident or a clever prank? (KALW, 2018)

  • 2
    But many mountains that have breast-related names are not shaped remotely like any breast I've ever enountered. For a prime example en.wikipedia.org/wiki/Grand_Teton Whoever named that had been a LONG time without female companionship :-)
    – jamesqf
    Dec 30, 2018 at 3:46

mammiform in British (ˈmæmɪˌfɔːm)

adjective having the shape of a breast

Collins English Dictionary.


  • most people with a verbal IQ of 125 will not have heard that word before ;-)
    – barlop
    Dec 31, 2018 at 2:12
  • 2
    @barlop Most of those same people will, however, be able to work out what it means by its components. Dec 31, 2018 at 12:43
  • @JanusBahsJacquet Sure, I didn't say they wouldn't know what it meant, I only said they won't have heard it before. Once they hear it they'll know what it means, and then they may look it up to check that the word really exists!
    – barlop
    Dec 31, 2018 at 14:01

I would suggest "mammillary", since it appears in the phrase "mammillary body", the usual term for a brain region named for its breast-like shape.


The trigonometric "sine" function derives its name from the Latin "sinus" meaning "bosom". This is itself a translation of the Arabic word "jaib" (also meaning "bosom"). The use of "jaib" is said to be due to phonetic similarity with the original Sanskrit "jiva" for "chord" transliterated into Arabic as "jiba" or "jb", but this would surely have been reinforced by the breast-like shape of this function.

So, if the sine function is breast-shaped, surely we can say the breast is sine-shaped?

  • 1
    That would certainly be translinguistically circumlocutory. But you are right, why not? :)
    – Lambie
    Jan 1, 2019 at 17:20

Mammaries is the plural to describe the breasts as it comes from 17th Century English (from mamma + -ary)

Mammary glands are glands within the breast which hold milk when lactating, and although the word mammary is used in the medical profession to describe breast tissue in both men and women, hense the word mammogram for male breast cancer testing (see here), the word is only used in the generalised sense when talking of female breasts.


Denoting or relating to the human female breasts or the milk-secreting organs of other mammals.
"mammary tumour viruses".


A breast.
"Page Three has become synonymous with mammaries".

mammary /ˈmaməri/


Websters and Oxford dictionaries both define mound as "A rounded mass projecting from a surface". I would suggest that it is simple, unpretentious,and easily identified as a descriptor of "breast-shaped".


Following tchrist's comment, if it’s Greek you want, while

mas­tos (μαστός) is just a sin­gle teat

and the source for mastectomy,

stethos (στῆθος)

is the en­tire bo­som in full (source for stethoscope). There’s also

bathukolpian, bathy­colpian < βαθύκολπος,

both of which al­ready ex­ist — but per­haps you might set­tle for


for the Bac­trian ver­sion (patterned after 'callipygian') or


for the dromedary. Speak­ing of which, Latin and her chil­dren have sup­plied English with a huge whole lot of words about this that no­body has men­tioned yet, like

mam­mate, mam­meated, mamel­onated (for teeth protuberances), mammatous (for clouds).



is quite nice once you strike its spu­ri­ous let­ter. Guess which one!

For the record, none of these are really used for the way that you presumably intend, but they surely should (spellcheck barfs over all these suggestions except for 'tectonic')

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