This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of somatic origin; developing from the somatic cells.

Originating in the soma, body, or physical organism in consequence of its conditions of environment: noting those modifications or biological characters which an organism acquires in reacting upon its material surroundings.

Pertaining to or concerning origin from the larval or later stages of development.

adj. of or arising from physiological causes rather than being psychogenic in origin

"Weismann (1892, p. 401) said, 'A somatogenic character is not inherited in this case, but the modifying influence – temperature – affects the primary constituents of the wings in each individual, i.e. a part of the soma – as well as germplasm contained in the germ of animals. '"

physical   

somatogenic variation