nodus

The nodus of the problem was the missing key.

Definition

1. Noun (plural: ):
   • A knot or node: In anatomy, a nodus is a small, knot-like structure or swelling, often referring to lymph nodes or other nodular formations in the body.
   • A critical point or difficulty: In figurative or literary use, a nodus is a central or problematic point in a situation, argument, or plot — a knotty issue or complication.

Usage Examples

• Anatomical sense:
  • The surgeon examined the nodus in the lymphatic system. (A small knot-like swelling in the lymph node.)
• Figurative sense:
  • The novel’s plot revolves around a nodus of conflicting loyalties. (A central, complicated point in the story.)
  • We have reached a nodus in our negotiations — a single issue that blocks progress. (A critical, knotty difficulty.)

Advanced Usage

• "Nodus tollens": A rare poetic or rhetorical term for a point of emotional or dramatic tension in a narrative.
  • The play’s nodus tollens occurs when the protagonist discovers the betrayal. (The peak of emotional difficulty.)

Variants and Related Words

• Nodal (adj): relating to a node or nodus.
  • The nodal points of the network are crucial for data flow. (The central connection points.)
• Nodule (n): a small, rounded lump or mass (derived from ).
  • A small nodule was found on the thyroid gland. (A tiny knot-like growth.)
• Nodose (adj): having nodes or knots; knobby.
  • The stem of the plant is nodose. (Covered with small knots or swellings.)

Synonyms

• Knot: a tied or tangled mass; a central difficulty.
• Complication: a factor that makes a situation more complex.
• Crux: the decisive or most important point of an issue.
• Node: a point of intersection or connection (in anatomy or networks).

Related Idioms

• "Gordian knot": a difficult problem or complication (historically linked to the concept of a as a knot).
  • Cutting the Gordian knot, they solved the nodus with a bold decision. (Resolving a complex difficulty directly.)

Phrasal Verbs