10-letter words containing h, r, o
- arch board — a distinctive area at the upper part of a stern, curving upward toward the center and giving the name and port of the vessel within a carved and painted frame; escutcheon.
- archbishop — In the Roman Catholic, Orthodox, and Anglican Churches, an archbishop is a bishop of the highest rank, who is in charge of all the bishops and priests in a particular country or region.
- archdeacon — An archdeacon is a high-ranking clergyman who works as an assistant to a bishop, especially in the Anglican church.
- archegonia — the female reproductive organ in ferns, mosses, etc.
- archemorus — Opheltes.
- archeocyte — (in sponges) a type of amoebocyte capable of developing into other types of cells, especially reproductive cells.
- archeology — archaeology
- archeozoic — early Precambrian; Archean
- archespore — the cell or group of cells in a sporangium that gives rise to spores
- archipenko — Aleksandr Porfiryevich (alɪkˈsandr parˈfirjɪvitʃ). 1887– 1964, Russian sculptor and painter, in the US after 1923, whose work is characterized by economy of form
- archivolts — Plural form of archivolt.
- archontate — an archon's period in office
- archoplasm — the protoplasmic material surrounding the centrosome, formerly thought to be involved in the formation of the asters and spindle during mitosis
- archosaurs — Plural form of archosaur.
- arctophile — a person who collects teddy bears or is fond of them
- arctophily — the practice of collecting teddy bears
- areography — the description of the physical features, such as the surface, atmosphere, etc, of the planet Mars
- arrowheads — Plural form of arrowhead.
- arrowsmith — a novel (1925) by Sinclair Lewis.
- art school — tertiary level college for students of art
- arthrodial — a joint, as in the carpal articulations, in which the surfaces glide over each other in movement.
- arthrodire — any of numerous fishes of the extinct order Arthrodira, widely distributed during the Devonian Period, having the anterior part of the body covered by a shield of bony plates.
- arthrogram — an x-ray photograph produced by arthrography.
- arthromere — any of the segments of the body of an arthropod
- arthropoda — the phylum comprising the arthropods.
- arthropods — any invertebrate of the phylum Arthropoda, having a segmented body, jointed limbs, and usually a chitinous shell that undergoes moltings, including the insects, spiders and other arachnids, crustaceans, and myriapods.
- arthrotome — (surgery) A strong scalpel used in the dissection of joints.
- arthrotomy — (medicine) The surgical incision of a joint.
- artichokes — Plural form of artichoke.
- astrograph — a navigational device for projecting altitude curves of the stars and planets onto charts or plotting sheets.
- astrophoto — (astronomy, photography) An image of one or more celestial objects made using techniques of astrophotography.
- asynchrony — a lack of synchronism or coincidence in time.
- atheromata — Plural form of atheroma.
- atmosphere — A planet's atmosphere is the layer of air or other gases around it.
- atrophying — Also, atrophia [uh-troh-fee-uh] /əˈtroʊ fi ə/ (Show IPA). Pathology. a wasting away of the body or of an organ or part, as from defective nutrition or nerve damage.
- audiograph — a machine used to test a patient's hearing by transmitting sound waves directly to the inner ear
- authorised — Alternative spelling of authorized.
- authorises — Third-person singular simple present indicative form of authorise.
- authoritie — Obsolete spelling of authority.
- authorized — officially permitted or empowered
- authorizer — to give authority or official power to; empower: to authorize an employee to sign purchase orders.
- authorizes — Third-person singular simple present indicative form of authorize.
- authorless — having no author; anonymous
- authorship — The authorship of a piece of writing is the identity of the person who wrote it.
- authourity — Obsolete form of authority.
- authourize — Rare spelling of authorize.
- autochrome — a material once used for color photography, consisting of a photographic emulsion applied over a multicolored screen of minute starch grains dyed red, green, and blue-violet.
- autographs — Plural form of autograph.
- autography — the writing of something in one's own handwriting; something handwritten
- autotrophs — Plural form of autotroph.