| demyelinate | (verb) destroy the myelin sheath of | - |
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| demyelination | (noun) loss of the myelin covering of some nerve fibers resulting in their impaired function | - |
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| encephalomyelitis | (noun) inflammation of the brain and spinal cord | - |
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| eyelash | (noun) any of the short curved hairs that grow from the edges of the eyelids | Synonyms: cilium, lash |
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| eyeless | (adjective) lacking eyes or eyelike features | - |
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| (adjective) lacking sight | Synonyms: sightless, unseeing |
| eyelessness | (noun) blindness due to loss of the eyes | - |
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| eyelet | (noun) a small hole (usually round and finished around the edges) in cloth or leather for the passage of a cord or hook or bar | Synonyms: eyehole |
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| (noun) fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines | Synonyms: cringle, grommet, grummet, loop |
| (noun) fabric decorated with small holes with finely stitched edges that form an ornamental pattern. | - |
| eyelid | (noun) either of two folds of skin that can be moved to cover or open the eye | Synonyms: lid, palpebra |
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| eyelike | (adjective) suggesting an eye or eyes | - |
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| eyeliner | (noun) makeup applied to emphasize the shape of the eyes | - |
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| myelatelia | (noun) any developmental defect of the spinal cord | - |
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| myelencephalon | (noun) the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults | - |
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| myelic | (adjective) of or relating to bone marrow cells | Synonyms: myeloid |
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| myelin | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myeline |
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| myelinated | (adjective) (of neurons) covered with a layer of myelin | Synonyms: medullated |
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| myeline | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myelin |
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| myelinic | (adjective) of or relating to the substance that forms a sheath around the axon of some nerve fibers | - |
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| myelinisation | (noun) the development of a myelin sheath around a nerve fiber | Synonyms: myelinization |
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| myelinization | (noun) the development of a myelin sheath around a nerve fiber | Synonyms: myelinisation |
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| myelitis | (noun) inflammation of the spinal cord | - |
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| myeloblast | (noun) a precursor of leukocytes that normally occurs only in bone marrow | - |
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| myelocyte | (noun) an immature leukocyte normally found in bone marrow | - |
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| myelofibrosis | (noun) fibrosis of the bone marrow | - |
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| myelogram | (noun) X-ray film of the spinal cord and spinal nerve roots and subarachnoid space | - |
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| myelography | (noun) roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space) | - |
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| myeloid | (adjective) of or relating to bone marrow | - |
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| (adjective) of or relating to bone marrow cells | Synonyms: myelic |
| (adjective) marrowlike | - |
| myeloma | (noun) a tumor of the bone marrow (usually malignant) composed of cells normally found in bone marrow | - |
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| myelomeningocele | (noun) a congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation | - |
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| osteomyelitis | (noun) an inflammation of bone and bone marrow (usually caused by bacterial infection) | - |
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| poliomyelitis | (noun) an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord | Synonyms: acute anterior poliomyelitis, infantile paralysis, polio |
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| polyelectrolyte | (noun) an electrolyte of high molecular weight | - |
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| pyelitis | (noun) inflammation of the renal pelvis | - |
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| pyelogram | (noun) an X ray of the kidneys and ureters | - |
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| pyelography | (noun) roentgenography of the kidney and ureters (usually after injection with a radiopaque dye) | - |
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| pyelonephritis | (noun) inflammation of the kidney and its pelvis caused by bacterial infection | - |
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| unmyelinated | (adjective) (of neurons) not myelinated | - |
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| yell | (noun) a loud utterance; often in protest or opposition | Synonyms: call, cry, outcry, shout, vociferation |
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| (noun) a loud utterance of emotion (especially when inarticulate) | Synonyms: cry |
| (verb) utter or declare in a very loud voice | Synonyms: scream |
| (verb) utter a sudden loud cry | Synonyms: call, cry, holler, hollo, scream, shout, shout out, squall |
| yelled | (adjective) in a vehement outcry | Synonyms: shouted |
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| yeller | (noun) someone who communicates vocally in a very loud voice | Synonyms: bawler, bellower, roarer, screamer, screecher, shouter |
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| yelling | (noun) uttering a loud inarticulate cry as of pain or excitement | Synonyms: shouting |
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| yellow | (adjective) of the color intermediate between green and orange in the color spectrum; of something resembling the color of an egg yolk | Synonyms: xanthous, yellowish |
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| (adjective) easily frightened | Synonyms: chicken, chickenhearted, lily-livered, white-livered, yellow-bellied |
| (adjective) cowardly or treacherous | - |
| (adjective) changed to a yellowish color by age | Synonyms: yellowed |
| (adjective) typical of tabloids | Synonyms: scandalmongering, sensationalistic |
| (adjective) affected by jaundice which causes yellowing of skin etc | Synonyms: icteric, jaundiced |
| (noun) yellow color or pigment; the chromatic color resembling the hue of sunflowers or ripe lemons | Synonyms: yellowness |
| (verb) turn yellow | - |
| yellowbird | (noun) American finch whose male has yellow body plumage in summer | Synonyms: goldfinch, New World goldfinch, Spinus tristis |
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| (noun) yellow-throated American wood warbler | Synonyms: Dendroica petechia, golden warbler, yellow warbler |
| yellowcake | (noun) an impure mixture of uranium oxides obtained during the processing of uranium ore | Synonyms: U308 |
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| yellowed | (adjective) changed to a yellowish color by age | Synonyms: yellow |
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| yellowfin | (noun) may reach 400 pounds; worldwide in tropics | Synonyms: Thunnus albacares, yellowfin tuna |
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| yellowhammer | (noun) European bunting the male being bright yellow | Synonyms: Emberiza citrinella, yellow bunting |
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| (noun) large flicker of eastern North America with a red neck and yellow undersurface to wings and tail | Synonyms: Colaptes auratus, yellow-shafted flicker |
| yellowish | (adjective) of the color intermediate between green and orange in the color spectrum; of something resembling the color of an egg yolk | Synonyms: xanthous, yellow |
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| yellowlegs | (noun) either of two North American shorebird with yellow legs | - |
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| yellowness | (noun) yellow color or pigment; the chromatic color resembling the hue of sunflowers or ripe lemons | Synonyms: yellow |
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| yellowtail | (noun) superior food fish of the tropical Atlantic and Caribbean with broad yellow stripe along the sides and on the tail | Synonyms: Ocyurus chrysurus, yellowtail snapper |
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| (noun) game fish of southern California and Mexico having a yellow tail fin | Synonyms: Seriola dorsalis |
| yellowthroat | (noun) small olive-colored American warblers with yellow breast and throat | - |
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| yellowwood | (noun) any of various trees having yellowish wood or yielding a yellow extract | Synonyms: yellowwood tree |
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| (noun) the yellow wood of any of various yellowwood trees | - |
| yelp | (noun) a sharp high-pitched cry (especially by a dog) | Synonyms: yelping, yip |
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| (verb) bark in a high-pitched tone | Synonyms: yap, yip |
| yelping | (noun) a sharp high-pitched cry (especially by a dog) | Synonyms: yelp, yip |
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