What is meant by oligospermia?

Explanation

**Step-by-Step Solution:**

1. **Definition of Oligospermia**: Oligospermia is a medical term that refers to a condition in males characterized by a lower than normal sperm count in the ejaculate.

2. **Understanding Semen Composition**: Semen, which is the fluid released during ejaculation, contains sperm (the male gametes) and secretions from various glands, including the prostate gland and seminal vesicles. These secretions provide nutrition and a medium for sperm to travel.

3. **Sperm Count Criteria**: The specific criterion for diagnosing oligospermia is that the sperm count in the ejaculate is less than 20 million sperm per milliliter (ml). This threshold is significant because it is associated with male infertility.

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