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Haemato- is a combining form used like a prefix meaning “blood.” It is used in many medical terms, especially in pathology.

Haemato- comes from the Greek ��î����, meaning “blood.”

Chiefly used in British English, haemato- is a variant of hemato-, itself a variant of hemo- before a vowel. When combined with words or word elements that begin with a vowel, haemato- becomes haemat-.

Want to know more? Read our �y��vlogs That Use haemat-, hemato-, and hemo- �����پ��������.��

Historically, haemato- has been written as ��æ�����ٴ�-, featuring a ligature of the a and e.

Other variants of haemato- used like hemo- are, hem-, hema-, and hemat-. As with haemato-, all of these combining forms are often spelled with an additional a in British English, as in haem-, haema-, haemo-, and, of course, haemato-.

Also closely related to haemato- are -aemia, -emia, -haemia, and -hemia, which are combined to the ends of words to denote blood conditions.

You can learn all about the specific applications for each of these forms at our �y��vlogs That Use articles for them.

One example of a term that features the combining form haemato- that you may have encountered is haematology, meaning “the study of the nature, function, and diseases of the blood and of blood-forming organs.”

The first part of the word, haemato-, means “blood.” The second combining form, -logy, is used to name branches of science, bodies or knowledge, and areas of study. Haematology literally translates to “the study of blood.”

What are some words that use the combining form haemato-?

• haematoblast
• haematocele
• haematocrit
• haematogenesis
• haematogenous
• haematolysis
• haematopoiesis
• haematothermal

What are some other forms that haemato- may be commonly confused with?

• chaeto-
• chemi–
• chemo-
• chromato-
• hemangio-
• hemi-
• homo-
• homeo-
• stomato-

Some organisms, like the vampire bat, are hematophagous. Given that the combining form -phagous means “eating, feeding on,” what does haematophagous mean?