9-letter words containing y, a
- homoplasy — correspondence in form or structure, owing to a similar environment.
- homotypal — of normal type
- honey ant — any of several ants, especially of the genus Myrmecocystus, that feed on honeydew or nectar and store the excess juices in the bodies of certain worker ants.
- honeycake — A cake made with honey, especially as a Rosh Hashanah tradition.
- honeytrap — A stratagem in which irresistible bait is used to lure a victim.
- honorably — in accordance with or characterized by principles of honor; upright: They were all honorable men.
- honourary — Misspelling of honorary.
- hooraying — Present participle of hooray.
- hornyhead — species of fish
- horseplay — rough or boisterous play or pranks.
- hortatory — urging to some course of conduct or action; exhorting; encouraging: a hortatory speech.
- humorally — in a humoral manner or from a humoral point of view
- husbandly — Having the characteristics of a husband; marital.
- husbandry — the cultivation and production of edible crops or of animals for food; agriculture; farming.
- hyacinths — Plural form of hyacinth.
- hyalinize — to become hyaline.
- hyalomere — the transparent part of a blood platelet, surrounding the chromomere.
- hyalonema — a species of sponge with a long stem made up of long, twisted glass-like fibres
- hybernate — Obsolete spelling of hibernate.
- hybridoma — a hybrid cell made in the laboratory by fusing a normal cell with a cancer cell, usually a myeloma or lymphoma, in order to combine desired features of each, as the ability of the cancer cell to multiply rapidly with the ability of the normal cell to dictate the production of a specific antibody.
- hydantoin — a colorless, needlelike, crystalline compound, C 3 H 4 N 2 O 2 , used in the synthesis of pharmaceutical substances and resins.
- hydathode — a specialized leaf structure through which water is exuded.
- hyde park — a public park in London, England.
- hyder ali — 1722–82, Islamic prince and military leader of India: ruler of Mysore 1759–82.
- hyderabad — a state in SE India, formed from portions of Chennai and Hyderabad states 1956. 105,963 sq. mi. (274,444 sq. km). Capital: Hyderabad.
- hydracids — Plural form of hydracid.
- hydraemia — the state of having an excess of water in the blood.
- hydramide — (organic compound) One of a group of crystalline bodies produced by the action of ammonia on certain aldehydes.
- hydramine — an amine derived from a glycol in which one hydroxyl is replaced by an amino group.
- hydrangea — any shrub belonging to the genus Hydrangea, of the saxifrage family, several species of which are cultivated for their large, showy flower clusters of white, pink, or blue.
- hydranths — Plural form of hydranth.
- hydrastis — goldenseal (def 2).
- hydrating — Present participle of hydrate.
- hydration — any of a class of compounds containing chemically combined water. In the case of some hydrates, as washing soda, Na 2 CO 3 ⋅10H 2 O, the water is loosely held and is easily lost on heating; in others, as sulfuric acid, SO 3 ⋅H 2 O, or H 2 SO 4 , it is strongly held as water of constitution.
- hydraulic — operated by, moved by, or employing water or other liquids in motion.
- hydraulus — a pipe organ of ancient Greece and Rome using water pressure to maintain the air supply.
- hydrazide — (chemistry) any compound derived from an oxoacid by replacing the hydroxide group with -NHNH2 or derived forms -NRNR2.
- hydrazine — Also called diamine. a colorless, oily, fuming liquid, N 2 H 4 , that is a weak base in solution and forms a large number of salts resembling ammonium salts: used chiefly as a reducing agent and a jet-propulsion fuel.
- hydrazoic — noting or pertaining to hydrazoic acid; triazoic.
- hydrazone — any of a class of compounds containing the group >C=NNH 2 .
- hydrocast — a process in which water is collected at various depths in a device with bottles clamped together, providing data on differing water characteristics.
- hydrolant — an urgent warning of navigational dangers in the Atlantic Ocean, issued by the U.S. Navy Hydrographic Office.
- hydrolase — an enzyme that catalyzes hydrolysis.
- hydronaut — a person trained to work in deep-sea vessels for research and rescue purposes.
- hydrosoma — hydrosome.
- hydrostat — an electrical device for detecting the presence of water, as from overflow or leakage.
- hydrovane — a vane on a seaplane conferring stability on water (a sponson) or facilitating take off (a hydrofoil)
- hydrozoan — any freshwater or marine coelenterate of the class Hydrozoa, including free-swimming or attached types, as the hydra, in which one developmental stage, either the polyp or medusa, is absent, and colonial types, as the Portuguese man-of-war, in which both medusa and polyp stages are present in a single colony.
- hyenalike — Resembling a hyena or some aspect of one.
- hygrogram — the record made by a hygrograph.