anemia

American  

[uh-nee-mee-uh] / əˈni mi ə /

Or anaemia

noun

1. Pathology. a quantitative deficiency of the hemoglobin, often accompanied by a reduced number of red blood cells and causing pallor, weakness, and breathlessness.

2. a lack of power, vigor, vitality, or colorfulness.

   His writing suffers from anemia.

---

anemia British  

/ əˈniːmɪə /

noun

1. the usual US spelling of anaemia

---

anemia Scientific  

/ ə-nē′mē-ə /

1. A deficiency in the oxygen-carrying component of the blood, as in the amount of hemoglobin or the number or volume of red blood cells. Iron deficiency, often caused by inadequate dietary consumption of iron, and blood loss are common causes of anemia.

2. See also aplastic anemia hemolytic anemia and sickle cell anemia

---

anemia Cultural  

1. A condition in which the capacity of the blood to carry oxygen is decreased because of too few red blood cells in circulation or because of too little hemoglobin.

---

Discover More

Because people suffering from anemia often appear weak and pale, the term is frequently used to describe general apathy or weakness: “The team's performance has been pretty anemic these past few weeks.”

Other Word Forms

• pseudoanemia
  noun

Etymology

Origin of anemia

First recorded in 1800–10; from New Latin, from Greek anaimía “bloodlessness, lack of blood”; see an- ¹, -emia

Compare meaning

How does anemia compare to similar and commonly confused words? Explore the most common comparisons:

• sickle cell anemia vs. anemia
• thalassemia vs. anemia

Explanation

Anemia is a medical condition resulting from lack of red blood cells or hemoglobin in the blood. People with anemia are often pale and lacking in energy. You become anemic when you are not getting enough iron. It is common among college students living away from home for the first time, because they often subsist on a diet of cheap carbohydrates instead of iron-rich, but expensive, foods like red meat and fresh vegetables.

Example Sentences

Iron deficiency anemia is especially common among pregnant women and adolescent girls in many developing countries.

From Science Daily • May 27, 2026

She said that her mother’s health has deteriorated as she battles severe autoimmune-related anemia and that her mother’s home and car were broken into, amid the stream of online hate.

From Los Angeles Times • May 1, 2026

In aplastic anemia, where the marrow stops making enough blood cells, and in inherited blood disorders such as sickle-cell disease, stem-cell transplantation has emerged as a curative therapy as the procedure has become safer.

From The Wall Street Journal • Apr. 19, 2026

Myeloma cells can also cause a reduction in overall blood cell counts, which can lead to anemia, and a decrease in normal antibodies, which can lead to compromised immunity and an increased risk of infections.

From Slate • Mar. 29, 2026

The only thing he seems sure of at this point is that he will have a very high fever and anemia.

From "Z for Zachariah" by Robert C. O’Brien