Who coined the term 'endoplasmic reticulum'?

Explanation

**Step-by-Step Solution:**

1. **Identify the Term**: The question asks for the origin of the term 'endoplasmic reticulum'.

2. **Historical Context**: The endoplasmic reticulum was first observed under a microscope by a scientist named Garnier. This is important to note as it indicates the initial discovery of the structure.

3. **Coining the Term**: The term 'endoplasmic reticulum' was coined by K. R. Potter in the year 1948. This is the key piece of information needed to answer the question.

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