List of 10-letter words beginning with

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There are 18 ten-letter words beginning with HELIO

HELIOGRAMS	• heliograms n. Plural of heliogram. • HELIOGRAM n. a message sent by reflecting the sun's rays with a mirror.
HELIOGRAPH	• heliograph n. An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight. • heliograph n. A heliogram. • heliograph n. An instrument for measuring the intensity of sunlight.
HELIOLATER	• heliolater n. A sun-worshipper. • HELIOLATER n. a sun worshipper.
HELIOLATRY	• heliolatry n. Worship of the sun as an actual religion/mythos. • heliolatry n. (Euphemistic) sunbathing. • HELIOLATRY n. sun worship.
HELIOMETER	• heliometer n. An astronomical instrument, based on a telescope, for measuring the diameter of the sun; now used to… • HELIOMETER n. instrument for measuring apparent diameter of the sun.
HELIOMETRY	• heliometry n. The measurement of the diameters of heavenly bodies, their relative distances, etc. • HELIOMETRY n. measurement by use of a heliometer, an instrument for measuring apparent diameter of the sun.
HELIOPAUSE	• heliopause n. (Astronomy) The boundary of heliosphere where the Sun’s solar wind is stopped by the interstellar medium. • HELIOPAUSE n. the upper limit of the earth's atmosphere.
HELIOPHYTE	• heliophyte n. (Botany) Any plant that thrives in bright sunlight. • HELIOPHYTE n. a plant flourishing in sunlight.
HELIOSCOPE	• helioscope n. (Astronomy) An apparatus for viewing the Sun without harming the eye, by means of an optical filter… • HELIOSCOPE n. an instrument for observing the sun without injury to the eyes.
HELIOSTATS	• heliostats n. Plural of heliostat. • HELIOSTAT n. an instrument using a mirror to reflect sunlight in a fixed direction, used for studying the sun or signalling messages.
HELIOTAXES	• HELIOTAXIS n. the response of an organism to the sun's rays.
HELIOTAXIS	• heliotaxis n. (Biology) Phototaxis related to the sun. • HELIOTAXIS n. the response of an organism to the sun's rays.
HELIOTROPE	• heliotrope n. (Botany) A plant that turns so that it faces the sun. • heliotrope n. A light purple or violet colour. • heliotrope n. The fragrance of heliotrope flowers.
HELIOTROPY	• heliotropy n. Heliotropism. • HELIOTROPY n. the tendency of stems and leaves to bend towards the sun.
HELIOTYPED	• heliotyped v. Simple past tense and past participle of heliotype. • HELIOTYPE v. to obtain such a picture.
HELIOTYPES	• heliotypes n. Plural of heliotype. • HELIOTYPE n. a picture obtained by the process of heliotypy.
HELIOTYPIC	• heliotypic adj. Relating to, or obtained by, heliotypy. • HELIOTYPIC adj. relating to, or obtained by, heliotypy.
HELIOZOANS	• heliozoans n. Plural of heliozoan. • HELIOZOAN n. a member of the Heliozoa.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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English Wiktionary: 35 words
Scrabble in French: 6 words
Scrabble in Spanish: 6 words
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 28 words

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