Hard TOEFL Words - Group 13

[Esc] (1)
n. animals having a bony or cartilaginous skeleton with a segmented spinal column

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n. capable of normal growth and development

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a. attentive to discover and avoid danger, or to provide for safety; wakeful

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a. spread by word of mouth, with minimal intervention in order to create buzz and interest; caused by a virus

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ad. almost completely; practically; essentially

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a. Instinctive; having to do with the response of the body as opposed to the intellect

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n. degree of exposure to public notice

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n. ability to see; sight; vivid mental image

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a. tending to vary often or widely;inconstant

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n. difference in electrical charge between two points