bio-, bi-, -bia, -bial, -bian, -bion, -biont, -bius, -biosis, -bium, -biotic, -biotical

Any means by which a person can be uniquely identified by evaluating one or more distinguishing biological traits.

Unique identifiers include fingerprints, hand geometry, earlobe geometry, retina and iris patterns, voice waves, DNA, and signatures.

The oldest form of biometric verification is fingerprinting. Historians have found examples of thumbprints being used as a means of unique identification on clay seals in ancient China.

Biometric verification has advanced considerably with the advent of computerized databases and the digitization of analog data, allowing for almost instantaneous personal identification.

1. Someone who specializes in the science of biometry, or biometrics, which is the study biostatistics including the calculation of the probable duration of human life.
2. A person who uses statistical techniques to analyze biological data.

1. The science of measuring physical characteristics, to verify a person’s identity which includes voice recognition, iris and face scans, and fingerprint recognition.

This definition is a recent application from the tech world [a recently created application]. This sense of biometrics should not be confused with the much older sense, which refers to the application of statistical and mathematical methods for data analysis in the biological sciences. Also known as biometry (as shown in the next word group), this use of the term has been in the language since the early 1900s.

2. Quantification of psychopathological differences between subjects, specifically by assessing each subject across multiple dimensions. In psychiatry, those dimensions include sensation, perception, cognition, learning, psychophysiological reactions, and personality traits and characteristics.

More info about the science of biometrics.

A biometric tool that measures bodily features for better security.

A biometric tool that is important for physical-access control.

Biometrics Index.

Biometrics is used almost exclusively to measure the human-biological traits for security reasons.

New biometrics program looks for perspiration to authenticate real-living fingers.

Biometrics has perceived problems and will integrate "smart" passports.

Biometric terms and definitions.

1. The application of statistical methods to the study of numerical data based on biological observations and phenomena.
2. The measurement of life; the calculation of the average duration and expectation of life.
3. The application of mathematics to biology; especially, the study of resemblances between living things by statistical methods.
4. In the field of life insurance, the calculation of life expectancy.

A limestone composed of skeletal remains in a matrix of carbonate mud.

1. A microscope for examining living tissue in the body.
2. A microscope used with a slit lamp for viewing segments of the living eye.

1. Microscopic examination of living tissue in the body.
2. Examination of the cornea, aqueous humor, lens, vitreous humor, and retina by use of a slitlamp combined with a binocular microscope.

1. Biomicrite in which the carbonate-mud matrix has recrystallized to microspar.
2. Microsparite containing fossil fragments or fossils.