myelitis

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1. Inflammation of the spinal column.
2. Osteomyelitis.

1. Inflammation of the spinal cord.
2. Inflammation of the bone marrow.

1. inflammation of the spinal cord; there are no specific myelitides in animals but myelitis is a significant lesion in listeriosis, equine herpesvirus-1 infection in horses, caprine arthritis–encephalitis, equine protozoal myeloencephalitis.
2. inflammation of bone marrow (see also osteomyelitis).

• bulbar m. — that involving the medulla oblongata.
• spinal cord m. — is most commonly caused by a viral infection, though protozoa and helminth parasites are also significant causes. The signs are weakness through to complete flaccid paralysis, including paralysis of the anus and the tail. See also myelomalacia, encephalomyelitis.

The noun has one meaning:

Meaning #1: inflammation of the spinal cord