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

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

Chiefly used in British English, the combining form haema- is a variant of hema-, itself a rare variant of hemo- before a vowel.

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

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

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

Also closely related to haema- 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 medical term that features the combining form haema- is haemacytometer, also known as a hemocytometer, meaning “an instrument for counting blood cells.”

The haema- part of haemacytometer means “blood.” The second part of the word, cyto-, is a combining form that means “cell.” The final part of the word, -meter, means “measure.” Haemacytometer literally translates to “blood cell measurer.” (A haemocyte is a technical term for a blood cell.)

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

• haemachromatosis
• haemafibrite
• haematherm

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

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

The combining form -therm means “hot, heat.” An animal described as a haematherm would be:

A. cold-blooded

B. warm-blooded