Read along with the three podcasts, or open the full dictionary entry for Phlegm for the definition, Arabic meaning, synonyms and example sentences.
Narrator: Today's word is "Phlegm" — noun, pronounced /flem/, with the stress on "phlegm", the single syllable.
Narrator: Phlegm is the thick mucus produced in the nose, throat and lungs, especially when someone has a cold or a chest infection.
Narrator: In plain English, it is the sticky stuff you cough up when you are unwell.
Narrator: It comes from the Greek phlegma, meaning inflammation or clammy humour, and reached English through Old French in the medieval period.
Narrator: A common collocation is "cough up phlegm", which describes clearing the airways during a chest infection.
Narrator: It differs from mucus, which is the general medical term for all such secretions, while phlegm refers specifically to the kind from the lower airways.
Narrator: Figuratively, phlegm once meant calmness or sluggish composure, which is why we still call an unflappable person phlegmatic.
Narrator: Medicine, nursing, respiratory therapy, veterinary practice and the history of psychology all rely on the word.
Narrator: So remember: phlegm is the thick airway mucus of coughs and colds, and the old root behind a calm, phlegmatic temperament.
Speaker A: Why on earth does phlegm have a silent g in the middle of it?
Speaker B: Wonderful question! PHLEGM comes from the Greek phlegma, and we kept the Greek-style spelling while the pronunciation quietly dropped the g, leaving us with a tidy /flem/.
Speaker A: So the spelling is honouring the ancestor rather than the sound?
Speaker B: Exactly that, and the ancestor also gave us the four humours of ancient medicine, where phlegm was the cold, damp one.
Speaker A: Example sentences?
Speaker B: "The doctor asked whether she was coughing up green phlegm," meaning a possible infection. "Steam loosened the phlegm in his chest," meaning it became easier to clear. "He faced the crisis with the phlegm of a seasoned captain," meaning unshakeable calm.
Speaker A: Common mistakes?
Speaker B: Phlegm is uncountable, so never say phlegms, and never spell it flem or phelgm — the g sits before the m and stays silent.
Speaker A: Close relatives?
Speaker B: Mucus is the clinical cousin, sputum is the near twin used in laboratories, and catarrh is the handy everyday alternative — and phlegm still keeps its old Greek charm!
Speaker B: Let's use "phlegm" in AI prompts — useful for building a symptom-checker interface and for writing clinical documentation tools.
Speaker A: How would it apply to a symptom-checker app?
Speaker B: Ask the model to design the input fields with careful clinical wording.
Prompt: Design a symptom-checker form that asks users about phlegm colour, volume and duration, and explain in plain English why each question matters.
Speaker A: And for documentation?
Speaker B: Have it standardise the vocabulary across your records.
Prompt: Write a style guide for our clinical notes that defines when to use phlegm, mucus and sputum, with one example sentence for each term.
Speaker A: Could it help with search quality?
Speaker B: Yes, ask for spelling tolerance in your search layer.
Prompt: Create a fuzzy-search synonym list that maps common misspellings such as flem and phelgm to the correct term phlegm in our health content index.
Speaker A: One more?
Speaker B: Let's test the accessibility of the patient-facing copy.
Prompt: Rewrite this patient leaflet about coughing up phlegm at a reading age of twelve, keeping every safety warning intact.
Phlegm — meaning in Arabic & definition More P courses GL Dictionary