When chlorophyll doesn't produce in the plant, typically caused by a lack of iron or magnesium and sometimes from a disease. cloche:

The condition of a sick plant with yellowing leaves due to inadequate formation of chlorophyll chlorosis is caused by nutrient deficiency, usually iron or imbalanced pH.

Interveinal yellowing of foliage that results from a loss or deficiency of chlorophyll.

A yellowing or blanching of the leaves due to lack of chlorophyll, nutrient deficiencies or disease.

yellowing

The yellowing of plant tissue due to nutrient deficiencies or disease. Chromosome

Yellowing of leaves due to nutrient deficiency, most commonly a lack of nitrogen.

A yellowing of leaf tissue due to a lack of chlorophyll. Possible causes of chlorosis include poor drainage, damaged roots, compacted roots, high alkalinity, and nutrient deficiencies in the plant.

A nutrient deficiency characterized by yellow or brown leaves that occurs when there is a drop in chlorophyll production. The most likely cause is a mineral deficiency or pH imbalance.

Yellowing of leaf tissue due to a lack of chlorophyll.

An abnormal yellowing of a leaf.

The condition of a sick plant with yellowing leaves due to inadequate formation of chlorophyll. Chlorosis is caused by a nutrient deficiency, usually iron or nitrogen; nutrient deficiencies are themselves often caused by a pH that is out of the acceptable range.

(klor-o-sis). Loss of the green color from leaves, leaving them yellowish-green. It may be due to lack of needed nutrient elements, to inability to absorb those elements because of excess water or roo [..]

 When chlorophyll doesn’t produce in the plant, typically caused by a lack of iron or magnesium and sometimes from a disease.

Yellowing or bleaching of normally green plant tissue usually caused by the loss of chlorophyll.

the condition of a sick plant with yellowing leaves due to inadequate formation of chlorophyll; Chlorosis is caused by a nutrient deficiency, usually iron or imbalanced pH.

The loss of green colouring (chlorophyll) in a leaf, which makes it look bleached or yellowish. In extreme cases, the plant may the It is sometimes caused by a virus, but is usually due to a lack of e [..]

(n) iron deficiency anemia in young women; characterized by weakness and menstrual disturbances and a green color to the skin

Severe iron-deficiency characterized by a yellow-green tinge to the skin.

  anaemia from iron deficiency

Also known as green sickness, a 'peculiar form of anaemia' associated with females around puberty. Causes weakness, faintness, and rapid pulse on exertion (19thC).

The condition in plants relating to the loss or lack of green color. May be caused by disease activity, albinism, or nutritional deficiency.

Iron deficiency anemia; condition of pale or greenish skin, weakness, & dyspepsia.

Discoloration of normally green plant parts caused by disease, lack of nutrients, or various air pollutants.

Discoloration of normally green plant parts caused by disease, lack of nutrients, or various air pollutants.

Discoloration of normally green plant parts caused by disease, lack of nutrients, or various air pollutants.

partial or complete absence of normal green colour, affected organs becoming yellow-green, yellow or white. The condition may result from reduction in size or number of chloroplasts, destruction of ch [..]

yellowing of a leaf

Loss of green color in foliage followed by yellowing of the tissue.

Abnormal yellowing of plant tissues caused by nutrient dificiency or activities of a pathogen.

An abnormal yellowing of a leaf.

deficiency of chlorophyll in a normally green part of a plant so that it appears yellow-green yellow or white, as a result of mineral deficiency, inadequate light or infection.

(medicine,countable) An anaemia, due to deficiency of iron, characterized by a yellow-green colouration of the skin; greensickness (). (botany,uncountable) A yellowing of plant tissue due to loss [..]

The condition of a sick plant with yellowing leaves due to either inadequate formation of or the rapid depletion of chlorophyll. Chlorosis has a number of causes such as a nutrient deficiency, insect activity or poor soil pH.  Chlorosis can most often be traced to a deficiency of available iron.