medium/'miːdɪəm/

n. a way of communicating information or expressing ideas to people

a. of middle amount, size, degree, etc.

n. 〖复media/'miːdɪə/或~s〗 [C] 媒介，手段：The Internet is a modern medium of communication. 因特网是一种现代传媒。

a. 中间的，中等的：a girl of medium height 中等个头的女孩

◇The T-shirts come in three sizes: large, medium and small. 这些T恤衫有3个大小：大号、中号和小号。

构词源自middle

音组-dium/-dɪəm/

medium; radium; stadium

同根 immediate; immediately