BIRTH RATE

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 Dictionary entry overview: What does birth rate mean? 

• BIRTH RATE (noun)
  The noun BIRTH RATE has 1 sense:

1. the ratio of live births in an area to the population of that area; expressed per 1000 population per year

  Familiarity information: BIRTH RATE used as a noun is very rare.

 Dictionary entry details 

• BIRTH RATE (noun)

Sense 1

Meaning:

The ratio of live births in an area to the population of that area; expressed per 1000 population per year

Classified under:

Nouns denoting time and temporal relations

Synonyms:

birth rate; birthrate; fertility; fertility rate; natality

Hypernyms ("birth rate" is a kind of...):

rate (a magnitude or frequency relative to a time unit)

 Context examples 

An increase in the number of extreme hot days due to climate change could lead to increases in the preterm birth rate.

(Extreme temperatures could increase preterm birth risk, NIH)

The study also found that antioxidant supplements likely do not improve pregnancy and live birth rates.

(Antioxidant supplements do not improve male fertility, National Institutes of Health)

Birth rates were expanding right up to the depopulation.

(Scientists chart a baby boom in southwestern Native Americans from 500 to 1300 A.D., NSF)

Mule deer birth rates peak shortly before the peak of annual plant growth, when food sources are increasing.

(Tracking Deer by NASA Satellite, NASA)

Furthermore, live birth rates did not seem to differ at six months between the antioxidant (15%) and placebo (24%) groups.

(Antioxidant supplements do not improve male fertility, National Institutes of Health)

From the mid-1000s to 1280, by which time all the farmers had left, conflicts raged across the northern Southwest but birth rates remained high.

(Scientists chart a baby boom in southwestern Native Americans from 500 to 1300 A.D., NSF)

The authors only had enough participants to evaluate statistical differences in semen quality but not in pregnancy and live birth rates.

(Antioxidant supplements do not improve male fertility, National Institutes of Health)

Crude birth rates—the number of newborns per 1,000 people per year—were by then on the rise, mounting steadily until about 500 A.D. The growth varied across the region.

(Scientists chart a baby boom in southwestern Native Americans from 500 to 1300 A.D., NSF)

Yet birth rates were higher among people to the North and East, in the San Juan Basin and northern San Juan regions of Northwest New Mexico and Southwest Colorado.

(Scientists chart a baby boom in southwestern Native Americans from 500 to 1300 A.D., NSF)

Around 900 A.D., populations remained high but birth rates began to fluctuate.

(Scientists chart a baby boom in southwestern Native Americans from 500 to 1300 A.D., NSF)