13-letter words containing d, s, i
- headmistressy — typical of the duties and behaviour of a headmistress
- headshrinkers — Plural form of headshrinker.
- heart disease — any condition of the heart that impairs its functioning.
- hemichordates — Plural form of hemichordate.
- heptaselenide — (chemistry) any selenide containing seven selenium atoms in each molecule.
- herd instinct — the impulse or tendency toward clustering or acting in a group, especially the presumed instinct toward or need for gregariousness and conformity.
- hereditaments — Plural form of hereditament.
- hereditarians — Plural form of hereditarian.
- herefordshire — a former county in W England, now part of Hereford and Worscester.
- hermaphrodism — the condition of being a hermaphrodite.
- hero sandwich — a large sandwich, usually consisting of a small loaf of bread or long roll cut in half lengthwise and containing a variety of ingredients, as meat, cheese, lettuce, and tomatoes.
- herod antipas — died after a.d. 39, ruler of Galilee, a.d. 4–39: ordered the execution of John the Baptist and participated in the trial of Jesus.
- hertfordshire — a county in SE England. 631 sq. mi. (1635 sq. km).
- hexadactylism — Sexdactyly.
- hide and seek — one of a variety of children's games in which, according to specified rules, one player gives the others a chance to hide and then attempts to find them.
- hide-and-seek — one of a variety of children's games in which, according to specified rules, one player gives the others a chance to hide and then attempts to find them.
- high holidays — either of two holy days of special significance, Rosh Hashanah or Yom Kippur.
- high-sounding — having an impressive or pretentious sound; grand: the high-sounding titles of minor officials.
- high-spending — spending more than is necessary or appropriate
- high-spirited — characterized by energetic enthusiasm, elation, vivacity, etc.
- hip dysplasia — a genetic disorder, typically affecting young dogs of medium- to large-sized breeds, characterized by alteration and malformation of the hip joint.
- histiophoroid — of or relating to the sailfish
- histodialysis — histolysis.
- hit the skids — get into difficulties
- hold in leash — to control; curb; restrain
- holidaymakers — Plural form of holidaymaker.
- homoscedastic — having the same variance.
- horse trading — the act or fact of conducting a shrewd exchange or engaging in a horse trade; bargaining.
- horse-trading — to bargain or trade shrewdly.
- horseradishes — Plural form of horseradish.
- house-trained — housebroken.
- housebuilding — The trade or activity of building houses.
- housed string — a string of a stair (housed stair) receiving the ends of the risers or treads in a series of housings.
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- hunting sword — a short, light saber of the 18th century, having a straight or slightly curved blade.
- hyaluronidase — Biochemistry. a mucolytic enzyme found in the testes, in snake venom, and in hemolytic streptococci and certain other bacteria, that decreases the viscosity of the intercellular matrix by breaking down hyaluronic acid.
- hybrid system — a way of working, organizing, or doing something that is composed of elements of two separate systems
- hybridisation — Alternative form of hybridization.
- hydrarthrosis — a build-up of fluid or water in the cavity of a joint, esp the knee joint
- hydroaerobics — aerobic exercises performed in water, as in a swimming pool.
- hydrocolloids — Plural form of hydrocolloid.
- hydrodynamics — the branch of fluid dynamics that deals with liquids, including hydrostatics and hydrokinetics.
- hydrokinetics — the branch of hydrodynamics that deals with the laws governing liquids or gases in motion.
- hydromedusoid — a jellyfish or something resembling a jellyfish that lives in water
- hydrostatical — Alternative form of hydrostatic.
- hydrosulfides — Plural form of hydrosulfide.
- hydrosulfuric — (chemistry) Derived from hydrogen sulfide considered as hydrosulfuric acid.
- hydrosulphide — a compound containing the univalent group –HS.
- hydrosulphite — hyposulfite (def 1).
- hyperadenosis — abnormal enlargement of the glands, especially of the lymph nodes.