13-letter words that end in s
- arthroscopies — Plural form of arthroscopy.
- articulations — Plural form of articulation.
- arundinaceous — resembling a reed
- as it happens — You use as it happens in order to introduce a statement, especially one that is rather surprising.
- aschelminthes — a major grouping (formerly a phylum) of small-to-microscopic pseudocoelomate organisms, as the rotifers, nematodes, and gastrotriches, all of which are now classified as separate phyla.
- aspergillosis — a rare fungal infection, esp of the mucous membranes or lungs, caused by various species of Aspergillus
- aspirationals — Plural form of aspirational.
- ass backwards — in an order or way reverse from the usual: You've sewn the sleeve on assbackwards.
- ass-backwards — of or in a way that is particularly contrary to the usual way, confusing, etc.
- assassinators — Plural form of assassinator.
- assentiveness — the tendency to concur or comply
- assertiveness — confidently aggressive or self-assured; positive: aggressive; dogmatic: He is too assertive as a salesman.
- assiduousness — constant; unremitting: assiduous reading.
- assimilations — Plural form of assimilation.
- aster yellows — a dwarfing and yellowing of asters and various other plants, caused by a mycoplasma transmitted by a leafhopper.
- astereognosis — inability to recognize objects by touch
- astonishments — Plural form of astonishment.
- astrodynamics — the study of the motion of natural and artificial bodies in space
- at loose ends — in an unsettled, disorganized, or confused condition
- at sb's heels — If a person or an animal is at your heels, they are following close behind you.
- atherogenesis — (medicine) The formation of atheromas, especially on the walls of the arteries.
- atrabilarious — Characterized by melancholy or gloom.
- atroceruleous — a deep blue-black color.
- atrociousness — The state of being atrocious.
- attentiveness — characterized by or giving attention; observant: an attentive audience.
- attitudinizes — Third-person singular simple present indicative form of attitudinize.
- atypicalities — not typical; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species.
- aubervilliers — an industrial suburb of Paris, on the Seine. Pop: 63 136 (1999)
- audaciousness — Risky or daring behaviour.
- audiographics — audiographic teleconferencing
- augmentations — Plural form of augmentation.
- authenticates — Third-person singular simple present indicative form of authenticate.
- autocatalyses — Third-person singular simple present indicative form of autocatalyse.
- autocatalysis — the catalysis of a reaction in which the catalyst is one of the products of the reaction
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autocephalous — (of an Eastern Christian Church) governed by its own national synods and appointing its own patriarchs or prelates
- autochthonous — (of rocks, deposits, etc) found where they and their constituents were formed
- autorickshaws — Plural form of autorickshaw.
- autotoxicosis — autointoxication.
- autumn crocus — a liliaceous plant, Colchicum autumnale, of Europe and N Africa having pink or purplish autumn flowers
- availableness — Competent power; validity; efficacy; as, the availableness of a title.
- bachelorettes — Plural form of bachelorette.
- backgrounders — Plural form of backgrounder.
- bacteriolysis — the destruction or disintegration of bacteria
- bacteriostats — Plural form of bacteriostat.
- bag of tricks — a container or receptacle of leather, plastic, cloth, paper, etc., capable of being closed at the mouth; pouch.
- bag of waters — a fluid-filled membranous sac in the pregnant uterus that encloses and cushions the fetus, normally breaking at or just before the time of birth; the amnion.
- baily's beads — the brilliant points of sunlight that appear briefly around the moon, just before and after a total eclipse
- balch springs — a town in NE Texas.
- balkan states — the countries of the Balkan Peninsula: the former Yugoslavian Republics, Romania, Bulgaria, Albania, Greece, and the European part of Turkey