11-letter words containing a, c, t, o
- application — An application for something such as a job or membership of an organization is a formal written request for it.
- applicators — Plural form of applicator.
- applicatory — suitable for application
- apprecation — (obsolete) Earnest prayer; devout wish.
- appreciator — to be grateful or thankful for: They appreciated his thoughtfulness.
- approacheth — Archaic third-person singular form of approach.
- apricot jam — a sweet preserve made from apricots
- aprioristic — belief in, or reliance upon, a priori reasoning, arguments, or principles.
- araeometric — relating to araeometry
- arborescent — having the shape or characteristics of a tree
- arc-boutant — flying buttress.
- archaeocyte — (in sponges) a type of amoebocyte capable of developing into other types of cells, especially reproductive cells.
- archenteron — the cavity within an embryo at the gastrula stage of development that eventually becomes the digestive cavity
- archeometry — the branch of archaeology that deals with the dating of archaeological specimens through specific techniques, as radiocarbon dating and amino-acid dating.
- archicortex — (anatomy) Part of the allocortex, specifically three layered hippocampal cortexes necessary for hippocampus formation.
- architector — (obsolete) An architect.
- archtraitor — A chief or transcendent traitor.
- arctic zone — the section of the earth's surface lying between the Arctic Circle and the North Pole.
- arcticology — the scientific study of the Polar Regions.
- arctophilia — the practice of collecting teddy bears
- areocentric — relating to a reference system which has Mars as its centre
- aristocracy — The aristocracy is a class of people in some countries who have a high social rank and special titles.
- aristocrats — Plural form of aristocrat.
- aromaticity — the property of certain planar cyclic conjugated molecules, esp benzene, of behaving like unsaturated molecules and undergoing substitution reactions rather than addition as a result of delocalization of electrons in the ring
- ars poetica — the art of poetry
- art college — a college at which students study and make art of various kinds, such as drawing, painting and sculpture
- arthrectomy — surgical excision of a joint
- arthroscope — a tubular instrument that is inserted into the capsule of a joint to examine the joint, extract tissue, etc
- arthroscopy — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- articulator — a person or thing that articulates
- artiodactyl — any placental mammal of the order Artiodactyla, having hooves with an even number of toes; an even-toed ungulate. The order includes pigs, hippopotamuses, camels, deer, cattle, and antelopes
- ascititious — having been added to from something inessential or separate
- ascomycetes — any fungus of the phylum Ascomycota (or class Ascomycetes), including the molds and truffles, characterized by bearing the sexual spores in a sac (as distinguished from basidiomycete).
- ascriptions — Plural form of ascription.
- associating — to connect or bring into relation, as thought, feeling, memory, etc.: Many people associate dark clouds with depression and gloom.
- association — An association is an official group of people who have the same job, aim, or interest.
- associative — Associative thoughts are things that you think of because you see, hear, or think of something that reminds you of those things or which you associate with those things.
- associators — Plural form of associator.
- asteraceous — belonging to the Asterasceae, an alternative name for the plant family Compositae.
- astrocytoma — a tumour of the nervous system which originates in and consists mainly of astrocytes
- astromancer — divination by means of the stars.
- astrometric — (astronomy) of or relating to astrometry.
- astronautic — Of or pertaining to astronautics.
- at any cost — If you say that something must be done at any cost, you are emphasizing that it must be done, even if this requires a lot of effort or money.
- atactostele — (botany) A type of eustele, found in monocots, in which the vascular tissue in the stem exists as scattered bundles.
- atherectomy — the removal of plaque from an artery by means of a tiny rotating cutting blade inserted through a catheter.
- atherogenic — causing atheroma
- atmospheric — Atmospheric is used to describe something which relates to the Earth's atmosphere.
- atomic bomb — An atomic bomb or an atom bomb is a bomb that causes an explosion by a sudden release of energy that results from splitting atoms.
- atomic heat — the product of an element's atomic weight and its specific heat (capacity)