Glossary · Nouns · H
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TermTypeDefinitionClassificationsUpdated
Heedfulnessnounthe trait of staying aware of (paying close attention to) your responsibilitiesverified
Heirnouna person who is entitled by law or by the terms of a will to inherit the estate of anotherverified
Heir ApparentnounMWEan heir whose right to an inheritance cannot be defeated if that person outlives the ancestorverified
Heir PresumptivenounMWEa person who expects to inherit but whose right can be defeated by the birth of a nearer relativeverified
Heir-At-Lawnounthe person legally entitled to inherit the property of someone who dies intestateverified
Heirloomnoun(law) any property that is considered by law or custom as inseparable from an inheritance is inherited with that inheritanceverified
Helianthusnounany plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow raysverified
Helicopternounan aircraft without wings that obtains its lift from the rotation of overhead bladesverified
Heliocentric ParallaxnounMWEthe parallax of a celestial body using two points in the earth's orbit around the sun as the baselineverified
Heliometernounan instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescopeverified
Heliophilanounany of various South African herbs and subshrubs cultivated for long showy racemes of bright blue flowers with white eyesverified
Heliopsisnounany North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowersverified
Heliotypenounduplicator consisting of a gelatin plate from which ink can be taken to make a copyverified
Helixnouna curve that lies on the surface of a cylinder or cone and cuts the element at a constant angleverified
Helix AnglenounMWEthe constant angle at which a helix cuts the elements of a cylinder or coneverified
Helleborinenounany of several small temperate and tropical orchids having mottled or striped leaves and spikes of small yellowish-white flowers in a twisted racemeverified
Helmet OrchidnounMWEany of numerous orchids of the genus Pterostylis having leaves in a basal rosette and green flowers often striped purple or brown or red with the dorsal sepal incurved to form a hoodverified
Helmetflowernounany of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip processverified
Helminthnounworm that is parasitic on the intestines of vertebrates especially roundworms and tapeworms and flukesverified
Help DesknounMWEa service that provides information and assistance to the users of a computer networkverified
help filenounMWEA help file (sometimes called a help system ) is a documentation component of a software program that explains the features of the program and helps the user understand its capabilities. A bit like an extensive, organized, and thorough collection of FAQ s (frequently asked questions), the help system's purpose is to provide the answers that a user needs to understand to use the program effectively.Artifact
Helpernouna person who contributes to the fulfillment of a need or furtherance of an effort or purposeverified
Helper CellnounMWET cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cellsverified
Helper T CellnounMWET cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cellsverified
Helvellanounany fungus of the genus Helvella having the ascocarps stalked or pleated or often in foldsverified
Hemal ArchnounMWEa structure arising ventrally from a vertebral centrum and enclosing the caudal blood vesselsverified
Hematinnouna complex red organic pigment containing iron and other atoms to which oxygen bindsverified
Hematocelenounswelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis)verified
Hematochezianounpassage of stools containing blood (as from diverticulosis or colon cancer or peptic ulcer)verified
Hematocoelenounswelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis)verified
Hematocolposnounaccumulation of menstrual blood in the vagina (usually due to an imperforate hymen)verified