Definition of supermarginal in English:

supermarginal

adjective

  • 1Zoology Anatomy
    = supramarginal .

  • 2Better or more than marginal in quality or degree; (Economics) involving or achieving a greater than marginal level of profit or value.

  • 3Economics
    Of land or ore: of greater profitability than marginal land or ore. Of a farmer, etc.: working such land.

  • 4Politics
    Designating a constituency, etc., in which an election is expected to be extremely closely contested, the sitting or outgoing member typically having only a very small majority.

noun

  • 1Zoology
    rare A supermarginal part; especially one of the plates lying above the marginal plates of a starfish arm.

  • 2Politics
    A supermarginal constituency or seat.

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From super- + marginal.

Pronunciation

supermarginal

/ˌsuːpəˈmɑːdʒɪnl/ /ˌsuːpəˈmɑːdʒɪ(ə)nl/ /ˌsjuːpəˈmɑːdʒɪnl/