# Thermodynamics etymology

In etymologies, thermodynamics etymology refers to the developmental origin of the term "thermodynamics".

## Overview

The following shows condensed version of the etymology of the term thermodynamics, essentially defined by William Thomson (1854) as thermo-dynamics, solidified as a new science, as "mechanical theory of heat" by Rudolf Clausius (1865), and referred to as ΘΔcs or θ∆ics by James Maxwell (1870s):[1]

In 1868, Gustave Hirn, seemingly, was the first to use the un-hyphenated variant of the term thermodynamics, albeit in French as "thermodynamique".[2]

### ΘΔ

In Apr 2020, Libb Thims, following extensive research into the etymology of thermodynamics, with focus on James Maxwell's 1873 employment of "ΘΔcs", as Greek shorthand for the newly being coined science of thermodynamics, which, in the form of "ΘΔics"[3], has been the solidifying icon symbol at the bottom of every Hmolpedia article, since its 24 Dec 2007 launch (see: progress report), had been awakened to the fact that the Greek symbol "Θ" Theta, the "Th-" sound of both "thermodynamics and theology", was based on the Egyptian symbol of the sun, and also that the significance of it being the 9th letter (and numerical value of 9), was code for the Ennead.

In May 2020, at the point of the 215-page draft version of HCT (pg. 32), Thims had come to learn that both "theta" Θ and "Helios" were numerically equivalent to 318:

Θῆτα (Theta) = 9 + 8 + 300 + 1 = 318
Ηλιος (Helios) = 8 + 30 + 10 + 70 + 200 = 318

Thims, however, at this point, was ignorant about the symbolism of this number, stating: "we do not know presently the original significance" of this number?

On 12 Dec 2020, Thims unraveled the coded fact that the value "318", common to both theta and Helios, is representative of the diameter of a circle with a circumference of 1000-units.[4]

On 14 Dec 2020, Thims unraveled the fact that the gematria value of delta Δ is "345", meaning void or emptiness, and finally therein put all the pieces of the puzzle together; as follows:[5]

This is summarized in full in the ΘΔ = ThermoDynamics section.