ul·cer ['əl-sər] -n, vb
- a break in skin or mucous membrane with loss of surface tissue, disintegration and necrosis of epithelial tissue, and often pus
- something that festers and corrupts like an open sore
ul·cer·ate ['əl-sə-,rāt] -vb
- to become affected with or as if with an ulcer
- to affect with or as if with an ulcer
ul·cer·a·tion [,əl-sə-'rā-shən] -n, adj
- the process of becoming ulcerated : the state of being ulcerated
- ulcer
ulcerative colitis -n
- a nonspecific inflammatory disease of the colon of unknown cause characterized by diarrhea with discharge of mucus and blood, cramping abdominal pain, and inflammation and edema of the mucous membrane with patches of ulceration
ul·cero·gen·ic [,əl-sə-rō-'je-nik] -adj
- tending to produce or develop into ulcers or ulceration
ul·cer·ous ['əls-rəs, 'əl-sə-] -adj
- characterized or caused by ulceration
- affected with or as if with an ulcer : ulcerated
ule·ma [,ü-lə-'mä] -n
- the body of mullahs
- mullah
ulex·ite ['yü-lək-,sīt] -n
- a soft mineral consisting of a hydrous borate of sodium and calcium and usu. occurring in loose masses of white fibers
ul·lage ['ə-lij] -n
- the amount that a container (as a tank or cask) lacks of being full
ul·na ['əl-nə] -n, adj
- the bone on the little-finger side of the human forearm
- a corresponding part of the forelimb of vertebrates above fishes
ul·ster ['əl-stər] -n
- a long loose overcoat of Irish origin made of heavy material (as frieze)
ult -abbr
- ultimo
ul·te·ri·or [,əl-'tir-ē-ər] -adj, adv
- further, future
- more distant : remoter
- situated on the farther side : thither
- going beyond what is openly said or shown and esp. what is proper
ul·ti·ma ['əl-tə-mə] -n
- the last syllable of a word
ul·ti·ma·cy ['əl-tə-mə-sē] -n
- the quality or state of being ultimate
- ultimate
ul·ti·ma ra·tio [,u̇l-tə-mə-'rä-tē-,ō] -n
- the final argument
- the last resort (as force)
ul·ti·mate ['əl-tə-mət] -adj, n
- most remote in space or time : farthest
- last in a progression or series : final
- their ultimate destination was Paris
- eventual
- they hoped for ultimate success
- the best or most extreme of its kind : utmost
- arrived at as the last result
- basic, fundamental
- the ultimate nature of things -- A. N. Whitehead
- original
- incapable of further analysis, division, or separation
ultimate -n
- something ultimate
- fundamental
- acme
ul·ti·mate [-mət, -,māt] -vb
- end
ul·ti·mate·ly [-mət-lē] -adv
- in the end : fundamentally
- the word comes ultimately from Latin
- eventually
ul·ti·ma Thu·le [,əl-tə-mə-'thü-lē, -'thyü-] -n
- thule
ul·ti·ma·tum [,əl-tə-'mā-təm, -'mä-] -n
- a final proposition, condition, or demand
- one whose rejection will end negotiations and cause a resort to force or other direct action
ul·ti·mo ['əl-tə-,mō] -adj
- of or occurring in the month preceding the present
ul·ti·mo·gen·i·ture [,əl-tə-mō-'je-nə-,chu̇r, -ni-chər, -nə-,tyu̇r, -nə-,tu̇r] -n
- a system of inheritance by which the youngest child succeeds to the estate
ul·tra ['əl-trə] -adj
- going beyond others or beyond due limit : extreme
ultra -n
- one that is ultra : extremist
ultra- -prefix
- beyond in space : on the other side : trans-
- beyond the range or limits of : transcending : super-
- beyond what is ordinary, proper, or moderate : excessively : extremely
ul·tra·ba·sic [,əl-trə-'bā-sik] -adj, n
- extremely basic
- very low in silica and rich in iron and magnesium minerals
ul·tra·cen·trif·u·gal [-,sen-'tri-fyə-gəl, -fi-gəl] -adj, adv
- of, relating to, or obtained by means of an ultracentrifuge
ul·tra·cen·tri·fuge [-'sen-trə-,fyüj] -n
- a high-speed centrifuge able to sediment colloidal and other small particles and used esp. in determining sizes of such particles and molecular weights of large molecules
ultracentrifuge [-,sen-trə-fyu̇-'gā-shən] -vt, n
- to subject to an ultracentrifuge
ul·tra·fiche ['əl-trə-,fēsh] -n
- a microfiche whose microimages are of printed matter reduced 90 or more times
ul·tra·fil·tra·tion [,əl-trə-fil-'trā-shən] -n
- filtration through a medium (as a semipermeable capillary wall) which allows small molecules (as of water) to pass but holds back larger ones (as of protein)
ul·tra·high frequency [,əl-trə-'hī-] -n
- a radio frequency between superhigh frequency and very high frequency
ul·tra·ism ['əl-trə-,i-zəm] -n, adj or n, adj
- the principles of those who advocate extreme measures (as radicalism)
- an instance or example of radicalism
ul·tra·light ['əl-trə-,līt] -adj
- extremely light in mass or weight
ultralight -n
- a very light recreational aircraft typically for one person that is powered by a small gasoline engine
ul·tra·maf·ic [,əl-trə-'ma-fik] -adj
- ultrabasic
ul·tra·mar·a·thon [-'ma-rə-,thän] -n
- a footrace longer than a marathon
ul·tra·ma·rine [-mə-'rēn] -n
- a blue pigment prepared by powdering lapis lazuli
- a similar pigment prepared from kaolin, soda ash, sulfur, and charcoal
- any of several related pigments
- a vivid blue
ultramarine -adj
- situated beyond the sea
ul·tra·mi·cro [,əl-trə-'mī-(,)krō] -adj
- being or dealing with something smaller than micro
ul·tra·mi·cro·scope [,əl-trə-'mī-krə-,skōp] -n
- an apparatus for making visible by scattered light particles too small to be perceived by an ordinary microscope
ul·tra·mi·cro·scop·ic [-,mī-krə-'skä-pik] -adj, adv
- too small to be seen with an ordinary microscope
- of or relating to an ultramicroscope
ul·tra·mi·cro·tome [-'mī-krə-,tōm] -n
- a microtome for cutting extremely thin sections for electron microscopy
ul·tra·min·i·a·ture [-'mi-nē-ə-,chu̇r, -'mi-ni-,chu̇r, -'min-yə-, -chər, -,tyu̇r, -,tu̇r] -adj
- subminiature
ul·tra·mon·tane [-'män-,tān, -,män-'] -adj, n
- of or relating to countries or peoples beyond the mountains (as the Alps)
- favoring greater or absolute supremacy of papal over national or diocesan authority in the Roman Catholic Church
ul·trapas·teur·ized [-'pas-chə-,rīzd, -'pas-tyə-, -tə-] -adj
- subjected to pasteurization at higher than normal temperatures esp. to extend shelf life
ul·tra·short [-'shȯrt] -adj
- having a wavelength below 10 meters
- very short in duration
- an ultrashort pulse of light
ul·tra·son·ic [-'sä-nik] -adj, adv
- having a frequency above the human ear's audibility limit of about 20,000 hertz used of waves and vibrations
- utilizing, produced by, or relating to ultrasonic waves or vibrations
- ultrasonic testing of metal
ul·tra·son·ics [,əl-trə-'sä-niks] -n pl
- ultrasonic vibrations or compressional waves
- the study of ultrasonic vibrations and their associated phenomena
- ultrasonic devices
ul·tra·so·nog·ra·phy [-sə-'nä-grə-fē, -sō-] -n, adj
- ultrasound
ul·tra·sound ['əl-trə-,sau̇nd] -n
- vibrations of the same physical nature as sound but with frequencies above the range of human hearing
- the diagnostic or therapeutic use of ultrasound and esp. a noninvasive technique involving the formation of a two-dimensional image used for the examination and measurement of internal body structures and the detection of bodily abnormalities called also sonography
- a diagnostic examination using ultrasound
ul·tra·struc·ture ['əl-trə-,strək-chər] -n, adj, adv
- biological structure and esp. fine structure (as of a cell) not visible through an ordinary microscope
ul·tra·vi·o·let [,əl-trə-'vī-(ə-)lət] -adj, n
- situated beyond the visible spectrum at its violet end used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays
- relating to, producing, or employing ultraviolet radiation
ul·tra vi·res [,əl-trə-'vī-(,)rēz] -adv or adj
- beyond the scope or in excess of legal power or authority
ul·u·lant ['əl-yə-lənt, 'yül-] -adj
- having a howling sound : wailing
- dark wasteland...ululant with bitter wind -- Rudi Blesh
ul·u·late ['əl-yə-,lāt, 'yül-] -vi, n
- howl, wail
ul·va ['əl-və] -n
- sea lettuce
Ulys·ses [yu̇-'li-(,)sēz] -n
- odysseus