immunodeficiency
C1-C2Medical/scientific, academic; occasionally in general news contexts.
Definition
Meaning
A state where the body's immune system is not functioning properly, making it less able to fight infections and diseases.
Immunodeficiency can be primary (inborn, genetic) or secondary (acquired, e.g., from HIV infection, medical treatments like chemotherapy, or malnutrition). It refers to a defect in one or more components of the immune system, leading to increased susceptibility to infections, autoimmunity, or cancer.
Linguistics
Semantic Notes
Often used in compound forms (e.g., severe combined immunodeficiency, common variable immunodeficiency). The term inherently implies a pathological condition, not a temporary state like being 'run down'.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Both varieties use the same term.
Connotations
Identical connotations of a serious medical condition.
Frequency
Equally common in medical contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
suffer from [immunodeficiency]diagnosed with [immunodeficiency]a case of [immunodeficiency][immunodeficiency] caused by[immunodeficiency] resulting inVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None specific; the term is purely technical.”
Usage
Context Usage
Business
Rare, except in pharmaceutical or biotech contexts (e.g., 'developing therapies for primary immunodeficiencies').
Academic
Common in medical, biological, and public health research papers and textbooks.
Everyday
Used in general discussions about health, especially in news about HIV/AIDS or rare genetic disorders.
Technical
Core term in immunology, clinical medicine, virology, and genetics.
Examples
By Part of Speech
verb
British English
- The treatment can immunosuppress, potentially inducing a state of immunodeficiency.
- The virus immunodeficiens the host over time.
American English
- The medication can immunosuppress, potentially inducing immunodeficiency.
- The virus causes the host to become immunodeficient.
adverb
British English
- The system was functioning immunodeficiently.
- Not typically used.
American English
- Not typically used.
- Not typically used.
adjective
British English
- The immunodeficient child requires a protective environment.
- She was born with an immunodeficiency disorder.
American English
- The immunodeficient patient requires isolation.
- He was diagnosed with an immunodeficiency disease.
Examples
By CEFR Level
- Some diseases can cause immunodeficiency.
- People with immunodeficiency get sick more often.
- HIV is a virus that attacks the immune system and leads to acquired immunodeficiency syndrome (AIDS).
- Patients receiving chemotherapy may experience temporary immunodeficiency.
- The research focuses on gene therapy for severe combined immunodeficiency, a rare genetic disorder.
- Chronic malnutrition is a major cause of secondary immunodeficiency in developing nations.
Learning
Memory Aids
Mnemonic
Think: IMMUNO (relating to immunity) + DEFICIENCY (a lack or shortage). So, a deficiency in the immune system.
Conceptual Metaphor
THE BODY IS A FORTRESS; immunodeficiency is a broken/weak wall or a missing guard.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid calquing as 'иммунодефицитность' – the standard Russian term is 'иммунодефицит' (noun).
- Do not confuse with 'иммунодепрессия' (immunosuppression), which is often induced medically.
Common Mistakes
- Misspelling as 'immunodeficiancy' or 'immunodeficeincy'.
- Using it as a countable noun incorrectly (e.g., 'He has an immunodeficiency' is correct; 'He has immunodeficiency' is also acceptable).
Practice
Quiz
Which of the following best describes 'immunodeficiency'?
FAQ
Frequently Asked Questions
No. AIDS (Acquired Immunodeficiency Syndrome) is a specific, advanced stage of HIV infection, characterized by severe immunodeficiency. Immunodeficiency is the broader term for any state of immune system weakness.
Yes. Secondary immunodeficiencies, like those caused by certain medications, severe stress, or infections like influenza, can be temporary. Primary (genetic) immunodeficiencies are usually lifelong.
It is diagnosed through medical history, physical examination, and specific laboratory tests that measure levels and function of immune cells (like T-cells, B-cells) and antibodies (immunoglobulins).
The opposite is immunocompetence, meaning the immune system is functioning normally and effectively.