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.
pyelogram
1. An x-ray study of the kidney especially showing the pelvis (urine-collecting basin) of the kidney and the ureter.
2. An x-ray of the urine-collecting part of the kidney.

The x-ray is taken after the introduction of a contrast medium either into the bloodstream or directly into the kidney in order to highlight the internal structures.

Quotes: Grammar
Grammarians should be aware: grammar quotes.
radiocardiogram
A graphic record of the concentration of injected radioisotope within the cardiac chambers.
renogram
A graphical record of the varying radioactivity of a kidney into which a radioactive substance has been injected; also, a radiograph or autoradiograph of a kidney.
reontgenkymogram
TA record of the heart’s movements taken with the roentgenkymograph (an apparatus for recording the movements of the heart and great vessels or of the diaphragm on a single film).
reprogrammability
The ability to read from and to write data to the tag while that same tag is attached to its object.
rheogram
1. Any diagram exhibiting experimental results pertaining to rheology.
2. A plot, or diagram, of the shear stress versus the shear rate for fluid.
right ventricular apical electrogram
An intracardiac electrogram which is obtained by placing electrodes in the apex of the right ventricle.

It is used in mapping ventricular arrhythmias.

right ventricular electrogram
An intracardiac electrogram that is obtained by placing electrodes in the right ventricle.

It is used to asses ventricular activities and responses to stimuli.

roentgenocardiogram
1. The record or film obtained during radiocardiography (technique of recording or interpreting radiocardiograms).
2. A graphic record of the concentration of injected radioisotope within the cardiac chambers.
roentgenogram
1. A radiograph, the film on which an image is produced by exposure to x-rays.
2. To make a radiograph.
scalar electrocardiogram
The usual electrocardiogram which plots voltage versus time, as distinguished from the vectorcardiogram, which plots voltage versus phase.
sciagram (s) (noun), sciagrams (pl)
A shadow-picture; such as, a radiograph or X-ray photograph.
scintigram
An image or other record of part of the body obtained by measuring radiation from an introduced radioactive tracer by means of scintillation or an analogous detection method.

From scinti (llation) plus gram.

scotogram
The tracing of a scotoma (an area of lost or depressed vision within the visual field, surrounded by an area of less depressed or of normal vision).

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