"Externalistic" is a word in ENGLISH

Pertaining to, or invented by, Brown; -- a term applied to a system of medicine promulgated in the 18th century …

Pertaining to the concha, or external ear; as, the conchal cartilage.

Pertaining to the cuticle, or external coat of the skin; epidermal.

External; outward; pertaining to that which is external; -- opposed to interior; as, the exterior part of a sphere.

Of or pertaining to an object; contained in, or having the nature or position of, an object; outward; external; extrinsic; …

Of or pertaining to the outside; external; exterior; superficial.

Of or pertaining to the outer surface or to what is external; manifest; public.

Pertaining to the external or bodily appearance; corporeal; as, personal charms.

Of or pertaining to the external organs of generation.

Of or pertaining to the moral feelings or states of the soul, as distinguished from the external actions; reaching and …

Especially, pertaining to, or derived from, one's own consciousness, in distinction from external observation; ralating to the mind, or intellectual …

Of or pertaining to A. G. Werner, The German mineralogist and geologist, who classified minerals according to their external characters, …