third dimension

noun

Definition of third dimension

  1. 1 :  thickness, depth; also :  a dimension that adds the effect of solidity to a two-dimensional system

  2. 2 :  a quality that confers reality or lifelikeness night sounds that stick in the mind and give a third dimension to the memory — Adie Suehsdorf

third–dimensional

adjective

1846

First Known Use of third dimension

1846

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