birth defect: meaning, definition, pronunciation and examples
C1Formal, Medical, Technical, Academic, Careful Everyday
Quick answer
What does “birth defect” mean?
A physical or biochemical abnormality present from birth, which can be caused by genetic factors, environmental influences during pregnancy, or a combination of both.
Audio
Pronunciation
Definition
Meaning and Definition
A physical or biochemical abnormality present from birth, which can be caused by genetic factors, environmental influences during pregnancy, or a combination of both.
In broader discourse, the term can be used metaphorically to describe a fundamental flaw present from the inception of an idea, system, or object. However, this metaphorical use is often considered insensitive and should be avoided in formal contexts.
Dialectal Variation
British vs American Usage
Differences
No major lexical differences. Both use 'birth defect' as the standard term. Spelling follows regional norms (e.g., 'paediatric' vs. 'pediatric' in surrounding text).
Connotations
Equally clinical in both varieties. The shift toward person-first language ('a child with a congenital condition') is occurring similarly in both BrE and AmE professional communities.
Frequency
Slightly higher frequency in AmE medical literature, but this is marginal. The term is standard and common in both.
Grammar
How to Use “birth defect” in a Sentence
have + a birth defectbe born with + a birth defectcause + a birth defectprevent + birth defectsdiagnose + a birth defectthe birth defect + affects + [organ]Vocabulary
Collocations
Examples
Examples of “birth defect” in a Sentence
verb
British English
- [No direct verb form. Use phrases like 'cause a defect at birth'.]
American English
- [No direct verb form. Use phrases like 'result in a birth defect'.]
adverb
British English
- [No standard adverb form.]
American English
- [No standard adverb form.]
adjective
British English
- The paediatrician specialised in birth-defect epidemiology.
- They attended a birth-defect support group.
American English
- The pediatrician works in birth-defect prevention.
- It is a leading birth-defect research center.
Usage
Meaning in Context
Business
Rare. Might appear in pharmaceutical/insurance contexts: 'The drug carries a warning for potential birth defects.'
Academic
Common in medical, biological, and public health research: 'The study examined folate's role in preventing neural tube birth defects.'
Everyday
Used in careful discussion of health, pregnancy, and news reports. Often softened: 'The baby was born with a heart condition.'
Technical
The primary domain. Used in clinical diagnostics, teratology, genetics, and pediatrics with precise classification (e.g., 'CDC's Birth Defects Monitoring Program').
Vocabulary
Synonyms of “birth defect”
Strong
Neutral
Weak
Vocabulary
Antonyms of “birth defect”
Watch out
Common Mistakes When Using “birth defect”
- Using 'birth defect' as an adjective (e.g., 'birth defect baby' – incorrect; say 'baby with a birth defect').
- Misspelling as 'birth deffect'.
- Using it in a casual or metaphorical way, which can be offensive.
- Confusing it with 'genetic disorder' (not all birth defects are genetic; some are environmental).
FAQ
Frequently Asked Questions
In strictly medical contexts, it is standard terminology. However, in social, personal, or disability advocacy contexts, it is often considered blunt and potentially stigmatizing. Person-first language (e.g., 'a child born with a congenital heart condition') is generally preferred for being more respectful.
All genetic disorders present from birth are birth defects, but not all birth defects are genetic. Birth defects can also be caused by environmental factors (like alcohol, infections, or drugs during pregnancy), physical constraints in the womb, or unknown causes.
Some can be prevented or their risk significantly reduced through measures like taking prenatal vitamins (especially folic acid), avoiding alcohol and certain medications, managing chronic health conditions, and receiving vaccinations (e.g., for rubella) before pregnancy. Many, however, cannot currently be prevented.
No. Some structural defects (like heart defects) may not be immediately apparent. Many biochemical or metabolic birth defects (like phenylketonuria) are only detected through newborn screening tests. Some conditions manifest later in childhood or even adulthood.
A physical or biochemical abnormality present from birth, which can be caused by genetic factors, environmental influences during pregnancy, or a combination of both.
Birth defect is usually formal, medical, technical, academic, careful everyday in register.
Birth defect: in British English it is pronounced /ˈbɜːθ ˌdiːfekt/, and in American English it is pronounced /ˈbɝθ ˌdifekt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[none directly; the term itself is technical]”
Learning
Memory Aids
Mnemonic
Think of a factory's 'birth' (start of production) and a 'defect' (fault). A **birth defect** is a fault existing from the very start of life's production line.
Conceptual Metaphor
THE BODY IS A MANUFACTURED PRODUCT (a defect from the factory), DEVELOPMENT IS CONSTRUCTION (a flaw in the blueprint or building process).
Practice
Quiz
Which of the following is the most accurate and sensitive way to refer to an individual in a non-medical context?