12-letter words starting with hel
- heldentenors — Plural form of heldentenor.
- helianthemum — (botany) Any of the genus Helianthemum of rockroses.
- helianthuses — Plural form of helianthus.
- helical gear — a cylindrical gear wheel whose teeth follow the pitch surface in a helical manner.
- helical rack — a rack having teeth set at an oblique angle to the edges. Compare rack1 (def 5).
- helical scan — denoting a recording technique used with video tapes in which the recorded tracks on the tape are segments of a helix
- helichrysums — Plural form of helichrysum.
- helicobacter — Any member of the Helicobacter bacteria.
- helicographs — Plural form of helicograph.
- helicoptered — Simple past tense and past participle of helicopter.
- heliocentric — measured or considered as being seen from the center of the sun.
- heliogabalus — (Varius Avitus Bassianus"Marcus Aurelius Antoninus") a.d. 204–222, Roman emperor 218–222.
- heliographed — Simple past tense and past participle of heliograph.
- heliographer — (obsolete) Photographer.
- heliographic — a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
- heliogravure — photoengraving.
- heliophilous — attracted to sunlight
- heliospheric — Of or pertaining to the heliosphere.
- heliotherapy — treatment of disease by means of sunlight.
- heliotropism — heliotropic tendency or growth.
- helium flash — the explosive burning of helium in the case of a star of low mass that occurs when the core is so dense that the matter has become degenerate. The burning causes a rapid rise in temperature until it is so high that the gas ceases to be degenerate, after which there is a rapid expansion
- hell's angel — a member of a motorcycle gang of a kind originating in the US in the 1950s, who typically dress in denim and Nazi-style paraphernalia and are noted for their initiation rites, lawless behaviour, etc
- hell's bells — surprise
- hell-raising — behaviour which causes trouble
- hellaciously — In a hellacious manner.
- helleborines — Plural form of helleborine.
- hellespontus — an area in the southern hemisphere of Mars.
- hellgramites — Plural form of hellgramite.
- hellgrammite — the aquatic larva of a dobsonfly, used as bait in fishing.
- hello packet — (networking, communications) An OSPF packet sent periodically on each network interface, real or virtual, to discover and test connections to neighbours. Hello packets are multicast on physical networks capable of multicasting or broadcasting to enable dynamic router discovery. They include the parameters that routers connected to a common network must agree on. Hello packets increase network resilience by, e.g., allowing a router to establish a secondary connection when a primary connection fails.
- hello, world — (programming) The canonical, minimal, first program that a programmer writes in a new programming language or development environment. The program just prints "hello, world" to standard output in order to verify that the programmer can successfully edit, compile and run a simple program before embarking on anything more challenging. Hello, world is the first example program in the C programming book, K&R, and the tradition has spread from there to pretty much every other language and many of their textbooks. Environments that generate an unreasonably large executable for this trivial test or which require a hairy compiler-linker invocation to generate it are considered bad.
- hells canyon — a canyon on the Snake River in S Idaho and along the Oregon border: 125 miles (210 km) long with a maximum depth of about 7900 feet (2408 meters).
- helmet liner — a soft or padded lining for a helmet.
- helmet shell — a predatory marine gastropod of the family Cassidae, characterized by a thick, heavy shell with a broadened outer lip.
- helmsmanship — the skill or function of a helmsman
- helmspersons — Plural form of helmsperson.
- help on with — If you help someone on with an item of clothing, you help them put it on.
- help screens — computer instructions displayed on a visual display unit
- helping hand — aid; assistance: to give the destitute a helping hand.
- helping verb — auxiliary verb.
- helplessness — unable to help oneself; weak or dependent: a helpless invalid.
On this page, we collect all 12-letter words starting with HEL. It’s easy to find right word with a certain length. It is the easiest way to find 12-letter word that beginning with HEL to use in Scrabble or Crossword puzzles.