外祖母

wàizǔmǔ
  1. mother's mother
  2. maternal grandmother

CEDICT

maternal grandmother

Wiktionary

稱謂。尊稱母親的母親。

重編國語辭典

(正式)母親的母親。

維基詞典

Entry Composition

1 外 wài
  1. outside
  2. in addition
  3. foreign
  4. external
2 祖母 zǔmǔ father's mother; paternal grandmother

Containing this entry

曾外祖母 zēngwàizǔmǔ great-grandmother (mother's grandmother)

Related entries

外婆 wàipó
  1. (coll.) mother's mother
  2. maternal grandmother
这是我外婆的假牙。

It's my grandmother's set of false teeth.

These are my grandmother's artificial teeth.

Source: Tatoeba

姥姥 lǎolao
  1. (coll.) mother's mother
  2. maternal grandmother
我姥姥只喝了点儿汤。

My grandma just drank a bit of soup.

Source: Tatoeba

姥娘 lǎoniáng maternal grandmother (dialectal)
老老 lǎolao
  1. maternal grandmother
  2. same as 姥姥
老娘 lǎoniáng
  1. my old mother
  2. I, this old woman
  3. my old lady (colloquial)
  4. maternal grandmother
  5. midwife