| helminthoma | A discrete nodule of granulomatous inflammation (including the healed stage) caused by a helminth or its products, so termed on the basis of certain gross resemblances to a neoplasm. Origin: G. Helmins, worm, + -oma, tumour (05 Mar 2000) |
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| helminthophobia | <psychology> Morbid fear of worms. Origin: G. Helmins, worm, + phobos, fear (05 Mar 2000) |
| helminthosporin | <protein> An organic substance produced by a disease-causing fungus which acts like a gibberellin to plants, causing them to grow dramatically. Its chemical formula is C15H10O5. (09 Oct 1997) |
| helminthosporium | A deuteromycetous fungal genus including both saprophytes and plant parasites. (12 Dec 1998) |
| helminthosporium leaf spot | A plant disease affecting some grasses which is caused by parasitic fungi from the genus Helminthosporium and which appears as discoloured spots. (09 Oct 1997) |
| helminths | <epidemiology> Worms, in particular the five groups of parasitic worms: Monogeneans (flukes), Digeneans (flukes, schistosomes), Cestodes (tapeworms), Nematodes (roundworms) and Acanthocephalans (spiny-headed worms). (05 Dec 1998) |