- nomogram
- A
*form*of*line**chart*showing scales for the variables involved in a particular*formula*in such a way that corresponding values for each*variable*lie in a straight*line*intersecting all the scales. SYN:*nomograph*(2). [G. nomos, law, + gramma, something written]-a n. used to predict*blood**volume*n.*blood**volume*on the*basis*of the individual's*weight*and*height*.-a n. based on rectangular coordinates, representing two variables, on which a*cartesian*n.*family*of isopleths is superimposed for each of the additional variables involved. [from R.*Descartes*,*French*philosopher and mathematician, 1596–1650]-an*d'Ocagne*n.*alignment**chart*consisting of an arrangement of three or more*graduated*lines (straight or curved), each constituting a*scale*of values of a*variable*, constructed so that any straight*line*crossing these scales connects the simultaneously*compatible*values; from values for any two variables, the values of all other variables can be determined.-a n. used to predict necessary*Radford*n.*tidal**volume*for artificial*respiration*on the*basis*of*respiratory**rate*,*body**weight*, and sex;*correction*factors are supplied for*activity*,*fever*, altitude,*metabolic**acidosis*, and alterations in*dead**space*.-**Siggaard-**a n. used to predict acid-base*Andersen*n.*composition*of*blood*by the*slope*and*position*of a*buffer**line*constructed when P_{CO2}on a logarithmic*scale*is plotted against pH.* * *

**no·mo·gram 'näm-ə-.gram, 'nō-mə-***n*a graphic representation that consists of several lines marked off to scale and arranged in such a way that by using a straightedge to connect known values on two lines an unknown value can be read at the point of intersection with another line* * *

nom·o·gram (nomґo-gram) [*nomo-*+*-gram*] a figure consisting of three or more straight or curved lines, each graduated for a different variable and aligned in such a way that a straightedge crossing all of the scales cuts the scales at values of the variable that have a specified mathematical or empirical relationship. Called also*nomograph.*

*Medical dictionary.
2011.*