n.[C]

1. 中間；中庸；適中
   There is a medium in all things.

   凡事都有中庸之道。

2. 媒介物，媒體；傳導體[（+for）]
   Air is a medium for sound.

   空氣是聲音的傳播媒介。

3. 手段，工具[（+of）]
   English is not the usual medium of instruction in our school.

   英語不是我校通常使用的教學語言。

4. 新聞媒介，傳播媒介[P1]
   A good deal of adult education is accomplished by the mass media.

   成人教育的相當一部分是由大眾傳播媒介完成的。

5. （生物的）生活環境
   Water is the natural medium in which fish live.

   水是魚類賴以生存的自然環境。

6. 【生】培養基
7. （藝術創作所用的）材料；（藝術的）表現方法
   Water color is an extremely difficult medium to work with.

   水彩是一種極難掌握的繪畫手法。

8. （複數為mediums）巫師，女巫

a.

1. 中間的，中等的，適中的
   The man is of medium height.

   這男人中等個兒。

2. （肉）燒得適中的，中等熟度的

n.

1. an agency or means of doing something.
   ▸the material or form used by an artist, composer, or writer.
2. a substance through which sensory impressions are conveyed or physical forces are transmitted.
3. a particular form of storage material for computer files, such as magnetic tape or discs.
4. a liquid (e.g. oil) with which pigments are mixed to make paint.
5. (pl. mediums)
   a person claiming to be able to communicate between the dead and the living.
6. the middle quality or state between two extremes.
7. the substance in which an organism lives or is cultured.

adj.