Lacuna

Lacuna is a term used in various fields of study to refer to a gap, opening, or missing part. In the context of medicine, it is often used to describe a small cavity or depression, especially in a bone.

Anatomy

In anatomy, a lacuna is a small space containing an osteocyte in bone or chondrocyte in cartilage. In bone, the lacunae are arranged in concentric circles around Haversian canals. In cartilage, they are arranged in a random spatial manner. Each lacuna is generally occupied by a single cell.

Pathology

In pathology, lacuna refers to a small cavity or depression in a tissue or organ caused by disease or damage. For example, in the brain, lacunar infarcts can occur when one of the small arteries supplying blood to the brain's deep structures is blocked.

Literature

In literature, a lacuna is a gap or missing part in a manuscript, inscription, or text. This can be due to damage or loss over time, or it may be intentional, as in a censored or redacted document.

Linguistics

In linguistics, a lacuna is a lexical gap in a language. This refers to the absence of a word or phrase in a particular language for a specific meaning that one would expect to find. For example, English has no single word to express the concept of "the day after tomorrow."

Music

In music, a lacuna or lacunae can refer to a silent section of a piece of music, or a gap where music is missing in a manuscript.

See also

• Lacunar stroke
• Lacunar amnesia
• Lacunar ligament

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