底面

dǐmiàn
  1. bottom
  2. bottom side
  3. bottom surface

CEDICT

  1. (geometry) bottom surface; base
  2. bottom surface; base

Wiktionary

物体在最下端的一面。

重編國語辭典

Entry Composition

1 底 dǐ
  1. bottom; base
  2. background; foundation
  3. copy (of a manuscript or receipt etc) kept as a record
  4. (suffix) end of a year or month
  5. (math.) radix; base (abbr. for 底数 dǐshù)
=2 面 miàn
  1. face
  2. side
  3. surface
  4. aspect
  5. top
  6. classifier for objects with flat surfaces such as drums, mirrors, flags etc
=2 面 miàn variant of 面 miàn
=2 面 miàn
  1. flour
  2. noodles
  3. (of food) soft (not crunchy)
  4. (slang) (of a person) ineffectual
  5. spineless

Related entries

小受 xiǎoshòu (slang) bottom (in a homosexual relationship)
底端 dǐduān
  1. bottom
  2. bottom side
  3. end part
底部 dǐbù bottom
海洋底部有沙子。

There is sand at the bottom of the ocean.

Source: Tatoeba

零号 línghào (slang) bottom (in a homosexual relationship)
屁股 pìgu
  1. buttocks
  2. bottom
  3. butt
  4. back part
我屁股痛。

My butt hurts.

Source: Tatoeba

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