13-letter words containing a, c, r, i
- antiempirical — Going against what is empirically true.
- antimacassars — Plural form of antimacassar.
- antimicrobial — capable of destroying or inhibiting the growth of disease-causing microbes
- antinephritic — acting against kidney disease
- antiparasitic — acting against infection by parasites
- antiparticles — Plural form of antiparticle.
- antipruritics — Plural form of antipruritic.
- antirecession — acting against recession
- antirejection — acting to prevent the rejection of a transplanted organ
- antiresonance — a phenomenon in an electric, acoustic, or other such system in which the impedance is tending to infinity.
- antirheumatic — acting against rheumatism
- antiscorbutic — preventing or curing scurvy
- antisudorific — an antiperspirant.
- antisymmetric — (of a relation) never holding between a pair of arguments x and y when it holds between y and x except when x = y, as "…is no younger than…"
- aperiodically — In an aperiodic way.
- apheliotropic — growing in a direction away from the sunlight
- aphrodisiacal — having an aphrodisiac quality
- apicoalveolar — articulated with the tip of the tongue in contact with or in approximation to the alveolar ridge.
- apocryphalist — A member of the group who supported the inclusion of the Apocrypha in the Bible.
- apoplectiform — of or resembling apoplexy or stroke.
- apperceptions — Plural form of apperception.
- appreciatable — (chiefly,esthetics) That can be appreciated or enjoyed.
- appreciations — Plural form of appreciation.
- apprenticeage — (obsolete) Apprenticeship.
- aquaculturist — a person who practises aquaculture
- arab-american — a citizen or resident of the U.S. of Arab birth or descent.
- arabian camel — a domesticated camel, Camelus dromedarius, having one hump on its back and used as a beast of burden in the hot deserts of N Africa and SW Asia
- arabicization — the gradual change of a culture into one that incorporates Arab culture and/or speaks Arabic
- arachnephobia — Misspelling of arachnophobia.
- arachniphobia — Alternative form of arachnophobia.
- arachnivorous — Spider-eating.
- arachnoiditis — an inflammation of the arachnoid membrane
- arachnophobia — an abnormal fear of spiders
- arachnophobic — an abnormal or pathological fear of spiders.
- araeometrical — relating to araeometry
- arboriculture — the cultivation of trees or shrubs, esp for the production of timber
- arc of lowitz — a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.
- archaelogical — Nonstandard spelling of archaeological.
- archaeologian — (archaic) An archaeologist.
- archaeologist — a specialist in archaeology, the scientific study of prehistoric peoples and their cultures by analysis of their artifacts, inscriptions, monuments, etc.
- archaeometric — relating to archaeometry
- archaic smile — a conventional representation of the mouth characterized by slightly upturned corners of the lips, found especially on Greek sculpture produced prior to the 5th century b.c.
- archbishopric — the rank, office, or jurisdiction of an archbishop
- archebacteria — Plural form of archebacterium.
- archeological — of or relating to archaeology.
- archeologists — archaeology.
- archidiaconal — of or relating to an archdeacon or his office
- archie bunker — a poorly educated blue-collar worker, holding ultraconservative, racist, and male-chauvinist opinions.
- archimandrite — the head of a monastery or a group of monasteries
- archipelagoes — Plural form of archipelago.