blood-lead
UK[ˈblʌd lɛd]US[ˈblʌd lɛd]
n
The concentration of lead present in a person's blood, typically measured as an indicator of lead exposure or poisoning.
Morpheme Breakdown
blood
lead
blood
fluid
lead
metal
Etymology
The compound noun 'blood-lead' is a modern scientific term formed by straightforward combination of two ancient English words. 'Blood' has a Proto-Germanic root, while 'lead' also traces back through Germanic languages, likely from a common Indo-European base related to the metal. The compound's logic is transparently descriptive, specifying the bodily fluid ('blood') in which the specific substance ('lead') is measured. It emerged in the mid-20th century within public health and toxicology to precisely quantify lead exposure, reflecting a societal need to monitor an environmental toxin absorbed into the human body.
Analysis
Structure: blood (fluid) + lead (metal)
- blood: From Old English 'blōd', of Germanic origin; related to German 'Blut'. Functions as the primary noun denoting the red fluid circulating in the body.
- lead: From Old English 'lēad', of Germanic origin. Functions as the noun denoting the heavy, malleable metallic element (Pb).
Examples
Routine screening for elevated blood-lead levels is recommended for young children in older housing.
The study found a significant correlation between industrial emissions and average blood-lead concentrations in the community.
A blood-lead test is the most direct method to assess recent lead exposure.