gram-, -gram-, -gram, -grammatic, -grammatical, -grammatically, -gramme, -grammic +

(Greek: write, writing, something written, a written record, a recording; letters; words; later, a small weight, a unit of mass in the metric system)

A unit of weight in the metric system from 1797 gramme, borrowing of French gramme, from Late Latin gramma, "small weight"; from Greek gramma, "small weight"; originally, "something written"; from the stem of graphein, "to draw, to write".

—Compiled from information located in;
The Barnhart Dictionary of Etymology; Robert K. Barnhart, Editor;
The H.W. Wilson Company; New York; 1988; page 445.
The marking of the skin, usually in red, white, or black wheals. It is most often seen after rubbing the skin frimly with a blunted point
A plate culture of bacteria in which variable conditions are provided in order to determine the effect of these conditions on the growth of the bacteria.
A record of growth in graphic form.
azygogram (s) (noun) azygograms (pl)
The radiographic record or image obtained by azygography (radiography of the azygos venous system after injection of a contrast medium).

Azygos refers to an unpaired anatomical structure.

A record of the body's recoil caused by cardiac contraction, the ejection of blood into the aorta, and ventricular filling forces; has been used as a basis for calculating the cardiac output in mankind, but its lack of accuracy and reproducibility has caused it to be discarded.
A graphic representation of changes in atmospheric pressure, as measured by a barograph (an instrument that continuously and automatically records changes in pressure on a rotating drum).
A graphic representation of pressure and temperature readings, as made by a barothermograph (an instrument that records atmospheric pressure and temperature simultaneously).
A graphic representation of pressure, temperature, and humidity readings, as made by a barothermohygrograph.
bathygram (s) (noun), bathygrams (pl)
A diagram or record acquired from sonic sounding instruments: Part of Joe's project contained the results of the bathygram that he made use of.
bathythermogram (s) (noun), bathythermograms (pl)
The record that is made by a bathythermograph (an instrument that records water temperature in relation to ocean depth): As part of the course on oceanography, Mandy had to explain what a bathythermogram was and what was indicated by the documentation it presented.
The composite curve of an electrocardiogram representing the combined effects of the right and left ventricles.
bipolar electrocardiogram (s) (noun), bipolar electrocardiograms (pl)
An electronic instrument which obtains information by recording the differences in the voltages of two electrodes at different sites or parts of the surfaces of a body.
A tracing of the brachial (arm) artery pulse.
1. A radiograph obtained by bronchography (radiography of the bronchial tree after injection of a contrast medium).
2. A radiographic visualization of a bronchus (either of the two main branches of the trachea or the tube-like portion of the breathing or "respiratory" tract that connects the "voice box" (larynx) with the bronchial parts of the lungs).
The record made by a brontometer or brontograph (an instrument for recording the phenomena associated with thunderstorms).

Related "writing" word units: glypto-; graph-; scrib-, script-.