deficiency

deficiency Show phonetics
noun [C or U]n., pl. -cies.
(a) lack of what is needed:
Pregnant women often suffer from iron deficiency.
Deficiencies in the education system have been much in the news.

The quality or condition of being deficient; incompleteness or inadequacy.

1. A lack or shortage, especially of something essential to health; an insufficiency: a nutritional deficiency.

color deficiency 色覺缺陷

GERMANS AND HEARING DEFICIENCY

A few days ago, German ear specialists called for the nation to listen well. In fact, they asked Germans to do a hearing test! They warned that an estimated 15 million Germans - that's every fifth adult under 70 and every second older than 70 - are hard of hearing. But not just the elderly are affected! Around 30% of young Germans are believed to have a hearing deficiency.

━━ n. 欠陥 ((in, of)); 欠乏, 不足（分） ((of, in)).政府-抵押等方面之他義

	acquired immune deficiency syndrome（AIDS）	後天免疫不全症候群
	教育學	Mental deficiency	心理缺陷
	社會學	Mental deficiency	智力不足
	土壤學	deficiency symptom	缺肥徵狀
	林學	deficiency of growing stock	積蓄不足
	肥料學	deficiency symptoms	缺肥癥狀

deficiency disease　ビタミン欠乏症. 維他命缺乏症
deficiency payment　（農民に対する政府の）最低保証金.

deficient
adjective
1 lacking:
A diet deficient in vitamin D may cause the disease rickets.

2 not good enough:
His theory is deficient in several respects.