Definition

1. Noun:
   • Paranasal sinuses: The term "sinus paranasales" refers to any of the paired, air-filled cavities located within the bones of the skull surrounding the nasal cavity. These sinuses are lined with a mucous membrane that is continuous with the lining of the nasal passages.

Usage

• "Sinus paranasales" is a formal, anatomical term. In everyday and general medical English, the term paranasal sinuses is almost always used instead.
• It functions as a plural noun. The singular form is "sinus paranasalis," though this is rarely used in common practice.

Examples

• Noun:
  • Inflammation of the sinus paranasales is called sinusitis.
  • The CT scan showed a clear view of the patient's sinus paranasales.
  • The four main pairs of sinus paranasales are the maxillary, frontal, ethmoid, and sphenoid sinuses.

Advanced Usage

• The term is primarily used in academic, clinical, and anatomical contexts. It is standard in medical textbooks and precise anatomical descriptions.

Variants and Related Words

• Paranasal sinuses (n): The direct and most common English equivalent term.
• Sinuses (n): A common abbreviated term in general conversation, though it can refer to other types of sinuses in the body (e.g., venous sinuses).
• Nasal sinuses (n): A less precise but sometimes used synonym.
• Sinusitis (n): The medical condition denoting inflammation or infection of the paranasal sinuses.

Synonyms

• Paranasal sinuses
• Nasal sinuses
• Facial sinuses

Different Meanings

• The word "sinus" alone has broader meanings in anatomy and mathematics, referring to any cavity, channel, or hollow space (e.g., venous sinus in the brain, the sinus node in the heart, or the sine function in trigonometry). "Sinus paranasales" specifies the sinuses located near (para-) the nose (nasal).

Noun

1. any of the paired sinuses in the bones of the face adjacent to the nasal cavity that are lined with mucous membrane that is continuous with the lining of the nasal cavities