List of 9-letter words beginning with

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There are 18 nine-letter words beginning with HELIO

heliocide — n. (Organic chemistry) Any of a group of sesterterpenoid insecticides…
heliodons — n. Plural of heliodon.
heliodors — n. Plural of heliodor.
helioform — adj. (Uncommon) Sun-shaped.
heliogram — n. A message transmitted by a heliograph.
heliolite — n. A variety of feldspar, closely related to orthoclase.
heliology — n. (Dated) heliophysics.
helionaut — n. (Science fiction, rare) Someone who travels to the Sun; an…
helionium — n. Any atomic system containing a helium nucleus and an antihelium nucleus.
heliopore — n. A coral of the genus Heliopora, the sun coral or blue coral.
heliostat — n. A device that includes a plane mirror which turns so as to…
heliotail — n. (Astronomy) The part of the heliosphere opposite to the bow shock.
heliothid — n. A moth of what used to be considered the family Heliothidae…
heliotron — n. A stellarator in which a helical coil is used to confine the…
heliotype — n. A picture obtained by the process of heliotypy. — v. To produce pictures by heliotypy.
heliotypy — n. A method of transferring pictures from photographic negatives…
heliozoan — n. Any of a group of aquatic protozoans, of the order Heliozoa…
heliozoon — n. Misspelling of heliozoan.

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