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a. A bulbous Mediterranean plant (Hyacinthus orientalis) having narrow leaves and a terminal raceme of variously colored, usually fragrant flowers, with a funnel-shaped perianth.
b. Any of several similar or related plants, such as the grape hyacinth.
2. Greek Mythology A plant, perhaps the larkspur, gladiolus, or iris, that sprang from the blood of the slain Hyacinthus.
3. A deep purplish blue to vivid violet.
a. A reddish or cinnamon-colored variety of transparent zircon, used as a gemstone. Also called jacinth.
b. A blue precious stone, perhaps the sapphire, known in antiquity.

[Latin hyacinthus, from Greek huakinthos, wild hyacinth.]

hy′a·cin′thine (-sĭn′thĭn, -thīn′) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
Accursed ground Henceforth I hold thy flower-enamelled shore, O hyacinthine isle!
It was soon done, and the dark hyacinthine curves fell on her neck.
On the one hand, Milton's text describes God as a "sov'reign Planter" intending to "plant / A generation" and Adam and Eve as bodies of natural growth, almost inseparable from the earthly garden they tend: Adam's "hyacinthine locks," for instance, hang "Clust'ring" around his head and Eve's "golden tresses" wave "in wanton ringlets [...]/As the vine curls her tendrils." (33) But on the other hand, this view of the two humans, the first one the reader is offered, is presented from the perspective of Satan, who enters the newly created world from the outside.
Avipoxvirus detection by PCR according to clinical status and psittacine species, Brazil, 2015* Clinical status PCR positive Normal Cutaneous lesions Psittacine species Amazona aestiva (blue-fronted parrot) 4 -- Amazona brasiliensis (red-tailed Amazon) -- 1 Anodorhynchus hyacinthinus (hyacinthine macaw) -- 2 Ara chloropterus (green-winged macaw) -- -- Ara macao (scarlet macaw) -- 2 Ara ararauna (blue and yellow macaw) -- -- Deroptyus accipitrinus (red-fan parrot) -- 1 Guaruba guarouba (golden conure) -- 9 Pionites leucogaster (white-bellied caique) -- 4 Pionus fuscus (dusky parrot) -- 3 Total 4 23 Ratio, no.
Flee for God only, shee for God in him: His fair large Front and Eye sublime declar'd Absolute rule; and Hyacinthine Locks Round from his parted forelock manly hung Clust'ring, but not beneath his shoulders broad: Shee as a veil down to the slender waist Her unadorned golden tresses wore Dishevell'd but in wanton ringlets wav'd As the Vine circles her tendrils, which impli'd Subjection.
Este trabalho foi financiado pela Universidade Luterana do Brasil, pela Universidade para o Desenvolvimento do Estado e da Regiao do Pantanal, pelo Instituto Arara Azul, pelo Criadouro Asas do Brasil, pela Toyota do Brasil, pela WWF, pela Caiman, pela Brasil Telecom, pela Parrots International, Hyacinthine Macaw Survival Fund e pela Teresa Bracher.