frontal sinus

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Word: Frontal Sinus

Part of Speech: Noun

Definition: The frontal sinus is one of a pair of hollow spaces (or cavities) located in the frontal bone of the skull. These cavities are situated above the eyes and behind the forehead.

Explanation for New Learners:

• The frontal sinus is like a small empty space inside your forehead, just above your eyes. It is part of your face and is connected to your nose.
• These sinuses help to lighten the weight of your skull and play a role in your breathing and voice.

Usage Instructions:

• The term "frontal sinus" is mostly used in medical contexts, such as when talking about health or when visiting a doctor. It is not a word you would use in everyday conversation unless you are discussing health issues.

Example Sentence:

• "When she had a cold, the doctor said her frontal sinus was inflamed, causing her a lot of pain."

Advanced Usage:

• In medical discussions, you might hear terms like "frontal sinusitis," which refers to an infection or inflammation of the frontal sinus.
• Example: "Frontal sinusitis can cause severe headaches and pressure in the forehead."

Word Variants:

• Frontal Sinuses (plural): Refers to both cavities.
• Frontal (adjective): Related to the forehead.
• Sinus (noun): A general term for any cavity in the body.

Different Meanings:

• The word "sinus" can also refer to other cavities in the body, such as the maxillary sinus (located in the cheek area) or the nasal sinuses (around the nose).

Synonyms:

• There are no direct synonyms for "frontal sinus," but you might refer to it as "forehead cavity" in very informal terms.

Idioms and Phrasal Verbs:

• There are no specific idioms or phrasal verbs related to "frontal sinus," as it is a specialized medical term.

Summary:

The "frontal sinus" is a medical term that describes a specific part of the skull. It's important in discussions about health, especially when talking about issues related to breathing, infections, or headaches.

Academic

Noun

1. one of a pair of cavities in the frontal bone