12-letter words containing s, e, r, o
- allegrissimo — (music) A direction in musical notation indicating that the musical piece should be played very fast and lively.
- allelomorphs — Plural form of allelomorph.
- allosauruses — Plural form of allosaurus.
- alstroemeria — any plant of the tuberous perennial liliaceous genus Alstroemeria, originally S American, grown for their brightly coloured orchid-like flowers
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- alton towers — a 19th-century Gothic Revival mansion with extensive gardens in NW central England, in Staffordshire: site of a large amusement park
- ambidextrous — Someone who is ambidextrous can use both their right hand and their left hand equally skilfully.
- ambisextrous — Informal. sexually attracted to both sexes; bisexual. used by or suitable for either sex; unisex: ambisextrous hair styles.
- ambulatories — Plural form of ambulatory.
- amentiferous — bearing aments
- among others — used to indicate that there are several more people like the one or ones mentioned, but that you do not intend to mention them all
- amourousness — Rare spelling of amorousness.
- anaerobiosis — life in the absence of oxygen
- anamorphoses — Plural form of anamorphosis.
- anchorperson — the primary reporter on a news television broadcast
- androgenesis — a type of reproduction in insects and plants involving the development of an embryo that contains only paternal chromosomes
- androsterone — an androgenic steroid hormone produced in the testes. Formula: C19H30O2
- anemochorous — (of a fruit, seed, or spore) adapted for dispersion by wind.
- anemotropism — orientation in response to a current of air.
- anisothermal — (thermodynamics) Of or pertaining to a system that is not in thermal equilibrium, that does not have a single fixed temperature.
- anisotropies — Plural form of anisotropy.
- anorthoclase — a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase.
- anotherguess — of a different type or kind; different
- ansate cross — ankh
- anteriorness — The state or quality of being anterior.
- anthologiser — Alternative spelling of anthologizer.
- anti-strophe — the part of an ancient Greek choral ode answering a previous strophe, sung by the chorus when returning from left to right.
- anticonsumer — opposed to consumerism
- antiestrogen — any of several major female sex hormones produced primarily by the ovarian follicles of female mammals, capable of inducing estrus, developing and maintaining secondary female sex characteristics, and preparing the uterus for the reception of a fertilized egg: used, especially in synthetic form, as a component of oral contraceptives, in certain cancer treatments, and in other therapies.
- antigropelos — waterproof leggings used to protect against mud
- antineutrons — Plural form of antineutron.
- antistrophes — Plural form of antistrophe.
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- appressorium — a flattened hypha of a parasitic fungus that penetrates the host tissues
- appropriates — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximates — near or approaching a certain state, condition, goal, or standard.
- araeosystyle — (of columned buildings) having an alternately very wide and very narrow intercolumniation
- araneomorphs — Plural form of araneomorph.
- arborescence — treelike in size and form.
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- archenterons — Plural form of archenteron.