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Lumbo– is a combining form used like a prefix meaning “loin.” Loin, frequently in the plural loins, refers to the part of the body above your hip and below the ribcage or around the groin. Lumbo– is occasionally used in medical terms, especially in anatomy.

Lumbo– comes from Latin lumbus, meaning “loin,” which is also the source of loin as well as technical terms such as lumbago, a type of pain in the lower back, and numbles, the innards of certain animals that are used for food.

What are variants of lumbo-?

When combined with words or word elements that begin with a vowel, lumbo– becomes lumb–, as in lumbar, from Latin ���ܳ����������. Want to know more? Read our �y��vlogs That Use article about lumb-.

One example of a term from anatomy that uses the form lumbo– is lumbosacral, “of, relating to, or involving the lumbar and sacral regions or parts of the body.”

The lumbo– part of the word means “loin,” while –sacral refers to the sacrum, a bone in the pelvis. Lumbosacral literally means “relating to the loin and sacrum.”

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

• lumbocolostomy
• lumbocostal
• lumbocostal ligament
• lumboinguinal

What are some other forms that lumbo– may be commonly confused with?

• labio-
• lympho-
• lyo-

Not every word that begins with the exact letters lumb-, such as lumbrical or lumber, is necessarily using the combining form lumbo– to denote “loin.” Learn why lumber means “wood” at our entry for the word.

The word costal means “pertaining to the ribs or the upper sides of the body.” With this in mind, what does the anatomical term lumbocostal mean?