Also found in: Wikipedia.


 (mə-măt′əs, -mä′təs, -mā′-, măm′ə-təs)
A cloud formation consisting of rounded, usually smooth protuberances that appear to hang down from the base of cumulonimbus or other clouds.

[From Latin mammātus, having breasts, from mamma, breast; see mā- in Indo-European roots.]


(Physical Geography) a bumpy, breast-shaped cloud
References in periodicals archive ?
IOP Date and location Observed phenomena 1 9 May 2015 Sea-breeze front Titusville, Florida 2 10 May 2015 Sea-breeze front; distant ordinary Rockledge, Florida thunderstorms 3 11 May 2015 Sea-breeze front and convergence; Grand Island, Florida ordinary thunderstorms 4 12 May 2015 Sea-breeze front and convergence; Hastings, Florida strong thunderstorms; weak rotation 5 15 May 2015 Strong ordinary thunderstorms; Pasco County, Florida Gulf Coast sea-breeze front 6 16 May 2015 Gulf Coast sea-breeze front; Clearwater, Florida distant thunderstorms 7 19 May 2015 Sea-breeze front; numerous ordinary Hastings, Florida thunderstorms 8 20 May 2015 Sea-breeze front Rockledge, Florida 9 20 May 2015 Severe thunderstorms; shelf Daytona Beach, Florida clouds, mammatus, and gust fronts Table 3.
com)-- Stellar Analytics, a Market Research and Outsourcing professional services firm, today announced a partnership with Mammatus Ltd.
From sun halos to mammatus clouds, Im excited to peel back the layers and uncover the science with our viewers.
Sometimes, the underside of this anvil is home to a series of rounded Mammatus clouds, also known as Mammatocumulus (meaning 'mammary cloud').
This week we saw the unusual cloud formations, mammatus clouds, over Newcastle which surprised many of you.
Mammatus clouds take their name from the Latin for "udder" or "breast".
But he is not showing off; a word like mammatus is not only precise, it is more descriptive (once we have looked it up) than an elaborate simile would be.
Mammatus clouds over Byker, Newcastle | SIMON GREENER
The event also featured Canadian-born artist Kelly Richardson, whose work involves melding real footage with digital elements, such as combining a billowing factory with beautiful Mammatus clouds.
Unlike a pulse thunderstorm, the anvil on a mature supercell thunderstorm is huge and the presence of mammatus clouds is a sign to keep your distance.
The North Face Mammatus is my pick of the crop of retail Pro Shell jackets
Joanne Gillies TOP TREND: Apocalyptic scenes were caused by strange cloud formations called mammatus.