13-letter words containing a, c, t, i
- appendiculate — having appendicles
- apperceptions — Plural form of apperception.
- applicability — applying or capable of being applied; relevant; suitable; appropriate: an applicable rule; a solution that is applicable to the problem.
- applicational — Of or pertaining to an application.
- applicatively — In an applicative manner.
- appreciatable — (chiefly,esthetics) That can be appreciated or enjoyed.
- appreciations — Plural form of appreciation.
- apprenticeage — (obsolete) Apprenticeship.
- aquaculturist — a person who practises aquaculture
- arabicization — the gradual change of a culture into one that incorporates Arab culture and/or speaks Arabic
- arachnoiditis — an inflammation of the arachnoid membrane
- 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.
- 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
- archebacteria — Plural form of archebacterium.
- archeologists — archaeology.
- archimandrite — the head of a monastery or a group of monasteries
- architectonic — denoting, relating to, or having architectural qualities
- architectural — Architectural means relating to the design and construction of buildings.
- architectured — Designed (according to a form of architecture, or as if by an architect).
- architectures — Plural form of architecture.
- arctic circle — The Arctic Circle is an imaginary line drawn around the northern part of the world at approximately 66° North.
- arctic willow — a low-growing shrub, Salix arctica, of the tundra
- arcticologist — a person who specializes in arcticology.
- aridification — the process by which a humid region becomes increasingly dry, as by climatic change or human interference with the ecology.
- aristocracies — Plural form of aristocracy.
- aristocratism — the principles of aristocrats
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- arithmetician — a person skilled in arithmetic
- arkansas city — a city in S Kansas.
- armistice day — the anniversary of the signing of the armistice that ended World War I, on Nov 11, 1918, now kept on Remembrance Sunday
- arthritically — in an arthritic manner
- arthroconidia — Plural form of arthroconidium.
- arthroscopies — Plural form of arthroscopy.
- articulations — Plural form of articulation.
- artificiality — artificial quality.
- artificialize — to render artificial
- aryepiglottic — pertaining to or connecting the arytenoid cartilage and the epiglottis.
- ascensiontide — the ten days from Ascension Day to the day before Whit Sunday
- ascertainable — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- ascertainably — In a way that can be ascertained.
- ascertainment — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- 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.
- aspartic acid — nonessential amino acid that is a component of proteins and acts as a neurotransmitter
- associability — the condition of or the capacity to be associable or linked or related in thinking
- associateship — to connect or bring into relation, as thought, feeling, memory, etc.: Many people associate dark clouds with depression and gloom.
- associational — relating to association or alliance or an association, alliance or affiliation
- associatively — in an associative or connective manner