chlorosis

/K L AO1 R AH0 S AH0 S/
noun
  1. 1

    An anaemia, due to deficiency of iron, characterized by a yellow-green colouration of the skin; greensickness.

  2. 2

    A yellowing of plant tissue due to loss or absence of chlorophyll.

Source: https://en.wiktionary.org/wiki/chlorosis