13-letter words containing h, o, d, s
- photodynamics — the science dealing with light and its effects on living organisms.
- phyllocladous — having phylloclades.
- physics model — a variety of software illustrating the movement of objects in reality, used by designers of video games to improve verisimilitude
- piked dogfish — the spiny dogfish.
- polished rice — white rice polished or buffed by leather-covered cylinders during processing.
- polyadelphous — (of stamens) united by the filaments into three or more sets or bundles.
- posix threads — (programming) (Pthreads) A POSIX standard API that defines a set of C programming language types, functions and constants for creating and manipulating pre-emptive threads. The standard's full name is "POSIX.1c, Threads extensions (IEEE Std 1003.1c-1995)". Implementations are available on many Unix-like POSIX-conformant operating systems such as FreeBSD, NetBSD, OpenBSD, GNU/Linux, Mac OS X and Solaris as well as DR-DOS and Microsoft Windows. Pthreads was designed and implemented in the PART Project (POSIX / Ada-Runtime Project).
- post-midnight — the middle of the night; twelve o'clock at night.
- pound-foolish — not handling large sums of money wisely
- prosthodontia — the branch of dentistry that deals with the restoration and maintenance of oral function by the replacement of missing teeth and other oral structures by artificial devices.
- pseudo-heroic — Also, heroical. of, relating to, or characteristic of a hero or heroine.
- psychodynamic — Psychology. any clinical approach to personality, as Freud's, that sees personality as the result of a dynamic interplay of conscious and unconscious factors.
- quadraphonics — high-fidelity sound reproduction involving signals transmitted through four different channels.
- quadriphonics — quadraphony.
- ragged school — (in Britain, formerly) a free elementary school for poor children
- reupholstered — to provide (chairs, sofas, etc.) with coverings, cushions, stuffing, springs, etc.
- rhodesian man — an extinct Pleistocene human whose cranial remains were found at Kabwe, in Zambia: formerly in some classifications Homo rhodesiensis but now considered archaic Homo sapiens.
- rhodochrosite — a mineral, manganese carbonate, MnCO 3 , commonly containing some iron and calcium, and usually rose-red in color: a minor ore of manganese; manganese spar.
- ride the rods — to steal a ride on a freight train
- riding school — a place where equitation is taught.
- rosebud mouth — a mouth that resembles the unopened flower of a rose in shape
- saber-toothed — having long, saberlike upper canine teeth, sometimes extending below the margin of the lower jaw.
- sachet-powder — a small bag, case, or pad containing perfuming powder or the like, placed among handkerchiefs, lingerie, etc., to impart a pleasant scent.
- sadomasochism — interaction, especially sexual activity, in which one person enjoys inflicting physical or mental suffering on another person, who derives pleasure from experiencing pain.
- sadomasochist — interaction, especially sexual activity, in which one person enjoys inflicting physical or mental suffering on another person, who derives pleasure from experiencing pain.
- sandwich coin — a coin having a layer of one metal between outside layers of another, as a quarter with a layer of copper between layers of silver.
- sandwich loaf — a loaf of the type of soft white sliced bread often used to make sandwiches
- scalenohedral — a hemihedral crystal form of 8 or 12 faces, each face being a scalene triangle.
- scalenohedron — a hemihedral crystal form of 8 or 12 faces, each face being a scalene triangle.
- school dinner — meal served at educational institution
- school friend — A school friend is a friend of yours who is at the same school as you, or who used to be at the same school when you were children.
- school record — the information that is kept about a child at school, including biographical information and exam results
- scissors hold — a wrestling hold in which one contestant clasps the other with the legs
- scottish fold — a breed of medium-sized short-haired cat with folded ears
- scratch video — the technique or practice of recycling images from films or television to make collages
- second growth — the plant growth that follows the destruction of virgin forest.
- seventh chord — a chord formed by the superposition of three thirds.
- shadow boxing — to make the motions of attack and defense, as in boxing, as a training or conditioning procedure.
- shadowcasting — the enhancement of images by the casting of shadows
- shaft encoder — A shaft encoder is a sensor for measuring how fast a shaft rotates.
- sharp-tongued — characterized by or given to harshness, bitterness, or sarcasm in speech.
- shear modulus — The shear modulus of a material is how stiff or rigid it is. It is equal to the shear stress divided by the shear strain.
- shed light on — something that makes things visible or affords illumination: All colors depend on light.
- shell-shocked — battle fatigue.
- shetland pony — one of a breed of small but sturdy, rough-coated ponies, raised originally in the Shetland Islands.
- shetland wool — the fine wool undercoat pulled by hand from Shetland sheep.
- shock and awe — US military: use of extreme force
- shooting-down — fatal shooting
- short-sighted — unable to see far; nearsighted; myopic.
- short-sleeved — having short sleeves