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English word

substantial

C1Frequent NGSL-2

UK /səbˈstænʃl/US /səbˈstænʃl/

adjective

large in amount, value or importance

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Sentence 166 · Pro

Elon Musk's 2003 Stanford University Entrepreneurial Thought Leaders Lecture

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But in order to get to orbit, this would require a substantial improvement in the mass efficiency and the engine efficiency and probably be a two-stage vehicle.

Elon Musk's 2003 Stanford University Entrepreneurial Thought Leaders Lecture

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