文学 语义学 释 meta-language 元语言 用来描述或指称语言的语言或符号。又称纯理语言、符号语言。与对象语言（object language）相对。
metalanguage 元语言
＞数理逻辑与数学基础＞证明论＞释义 metalanguage 元语言 metalanguage 元语言†
系统软件 语言与编译 释文 meta language 元语言
- Mediterranean buffalo
- mediterranean salinity crisis
- Mediterranean Sea
- Mediterranean Shipping Company
- Mediterranean trade in the Middle Ages
- medium
- medium access control
- medium access control address
- medium access control address, MAC address
- medium access control, MAC
- medium-altitude satellite
- medium and long-term planning of water supply and demand
- Medium-and Long-term Youth Development Plan(2016—2025)
- medium and low-rise with high density
- medium-and-low-yield farmland rehabilitation
- medium-band photometry
- medium-band width
- medium bosons
- Medium calorific value gas
- medium carbon steel
- medium coat
- medium contrast
- medium cotton
- medium crude oil
- medium density fiberboard