13-letter words containing c, o, a
- apostolically — In an apostolic way.
- appeals court — An appeals court is the same as an appellate court.
- apperceptions — Plural form of apperception.
- apple orchard — an orchard planted with apple trees
- apple-knocker — Northern U.S. a rustic.
- applicational — Of or pertaining to an application.
- appreciations — Plural form of appreciation.
- approach path — the course followed by an aircraft preparing for landing
- approach road — an access road to a house, station, airport, village etc
- approach shot — a shot made to or towards the green after a tee shot
- approval code — An approval code is a PIN or other verification code needed to authorize a payment going through the cash register.
- 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 cotangent — the angle, measured in radians, that has a cotangent equal to a given number. Symbol: cot −1. Abbreviation: arc cot.
- arc of lowitz — a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.
- archaelogical — Nonstandard spelling of archaeological.
- archaeobotany — the analysis and interpretation of plant remains found at archaeological sites
- 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
- archaeopteryx — any of several extinct primitive birds constituting the genus Archaeopteryx, esp A. lithographica, which occurred in Jurassic times and had teeth, a long tail, well-developed wings, and a body covering of feathers
- archaezoology — the analysis and interpretation of animal remains found at archaeological sites
- archbishopric — the rank, office, or jurisdiction of an archbishop
- archeological — of or relating to archaeology.
- archeologists — archaeology.
- archeptolemus — (in the Iliad) the son of Iphitus who served as a charioteer for Hector.
- archidiaconal — of or relating to an archdeacon or his office
- archipelagoes — Plural form of archipelago.
- architectonic — denoting, relating to, or having architectural qualities
- 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.
- armored cable — an electric cable having a metal protective covering
- armored scale — any of a family (Diaspididae) of scale insects characterized by a hard, waxy secretion that covers the body: many armored scales are serious pests of trees and shrubs
- arsenous acid — a toxic white powder, As2O3, used to make other arsenic compounds, insecticides, and preservatives; white arsenic
- art collector — a person who collects works of art
- arthroconidia — Plural form of arthroconidium.
- arthroscopies — Plural form of arthroscopy.
- articulations — Plural form of articulation.
- arundinaceous — resembling a reed