# Margo

/ˈmɑɹɡoʊ/ (US) · CEFR C2 · Noun

Source: https://englishreference.com/word/margo
Updated: 2026-08-15

## Definition

the edge or border of an organ or a part of a plant. It is a technical word used by doctors and scientists to describe where one part ends and another begins.

For teachers: the border or edge of a biological structure, such as an anatomical organ or a leaf. Often used in descriptive pathology and botany to specify the exact boundary of a specimen.

## Examples

- The doctor examined the margo of the liver.
- The surgeon ensured that the margo of the excised tissue was clear of any abnormal cells.
- In botanical classification, the specific texture and shape of the leaf margo can be a primary diagnostic feature for distinguishing between closely related species within the same genus.

## Usage notes

- The plural form is 'margines'. It is primarily found in medical, anatomical, and botanical Latin-based descriptions.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.