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English Words Starting With H
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- helianthine b/ˌhiːlɪˈænθaɪn/a bright yellow-orange dye or color; resembling or derived from sunflowers (genus Helianthus).nounExtremely rare, technical/literary
- helianthus/ˌhiːliˈænθəs/A genus of flowering plants in the daisy family, commonly known as sunflowers.nounRare
- helical gear/ˌhel.ɪ.kəl ˈɡɪə/A gear wheel with teeth cut at an angle to the axis of rotation, forming a helix shape. This design allows for smoother, quieter engagement than spur gears.nounLow (Technical)
- helical rack/ˈhɛlɪk(ə)l ræk/A linear gear with teeth cut at an angle to its axis, designed to mesh smoothly with a helical pinion.nounC2
- helical scan/ˈhelɪkəl skæn/A method of recording or reading data by writing it in diagonal stripes across a magnetic tape using a rotating head.nounC2
- helicase/ˈhiːlɪkeɪz/An enzyme that unwinds DNA or RNA by breaking hydrogen bonds between base pairs.nounC2
- helices/ˈhiːlɪsiːz/ or /ˈhɛlɪsiːz/The plural form of 'helix,' referring to spiral shapes, structures, or curves.nounLow
- helichrysum/ˌhɛlɪˈkraɪsəm/a genus of flowering plants in the sunflower family, often known as 'everlasting' or 'strawflower' due to their papery, long-lasting blooms.nounC2
- helicity/hɪˈlɪsɪti/A property of a moving particle or system, representing its projection of spin along its direction of motion; a measure of the handedness (left- or right-handed) of a particle's spin relative to its momentum.nounC2/Highly Specialized
- helicline/ˈhɛlɪklaɪn/A continuously rising or falling path, typically a curved ramp.nounVery Rare / Technical
- helicograph/ˈhɛlɪə(ʊ)ɡrɑːf/A device for signaling by reflecting sunlight with a movable mirror.nounRare/Obsolute
- helicoid/ˈhɛlɪkɔɪd/A geometric shape or structure that resembles a spiral or a coiled spring.adjectivenounC2
- helicoid cyme/ˈhɛlɪkɔɪd saɪm/A botanical term for a type of inflorescence (flower cluster) where the flowers develop on one side only, creating a coiled or spiral form that unfurls as it grows.nounVery Low
- helicon/ˈhɛlɪk(ə)n/A large, circular brass instrument, typically a tuba, designed to be worn over the shoulder in marching bands.nounLow
- helicopt/ˈhɛlɪkɒptə/A type of aircraft that derives lift and propulsion from horizontally rotating overhead blades, allowing it to take off and land vertically and to hover.verb-ambitransitiveB1
- helicopter/ˈhel.ɪˌkɒp.tə/A type of aircraft that uses rotating horizontal blades to fly vertically, hover, and take off and land in small spaces.nounverbverb-intransitive+1B1
- helicopter gunship/ˈhɛlɪkɒptə ˈɡʌnʃɪp/A military helicopter equipped with weapons for attacking ground targets.nounLow
- helicopter parent/ˈhel.ɪˌkɒp.tə ˌpeə.rənt/A parent who is overly involved in their child's life, experiences, and problems, often attempting to control or shield them excessively.nounC1
- helicopter parenting/ˈhel.ɪˌkɒp.tə ˈpeə.rən.tɪŋ/A style of parenting where parents are overly involved in their children's lives, monitoring their activities and problems closely, often to the point of being overprotective and controlling.nounC1
- helicopter view/ˈhel.ɪˌkɒp.tə ˌvjuː/A broad, high-level overview of a complex situation, topic, or system, without delving into fine details.nounMedium (common in business, academic, and technical contexts; less common in everyday conversation)
Showing 2121–2140 of 5990 words.