As an adjective triassic

is of or from the geologic strata above the permian and below the jurassic; of or belonging to the period 250 to 200 million years ago when these strata were laid down.

As a proper noun triassic

is (geology) a geologic period within the mesozoic era; comprises lower, middle and upper epochs from about 250 to 200 million years ago.

As a noun phytosaur is

any member of the family , a group of large semi-aquatic predatory archosaurs, resembling modern crocodiles, that flourished during the late triassic period.

As a noun setae

is plural of seta.

As an adjective achaetous is

without setae.

Achaetous is a synonym of asetigerous.

Asetigerous is often a misspelling of achaetous.

Asetigerous has no English definition.

As an adjective achaetous is

without setae.

As adjectives the difference between functional and unfunctional

is that functional is in good working order while unfunctional is not functional; ornamental, or serving some other purpose than a practical one.

As a noun functional

is (mathematics) a function that takes a function as its argument; more precisely: a function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space an example: the definite integration of integrable real functions in a real interval.

As adjectives the difference between ornamental and unfunctional

is that ornamental is serving to ornament; characterized by ornament; beautifying; embellishing while unfunctional is not functional; ornamental, or serving some other purpose than a practical one.

As a noun ornamental

is an ornamental plant.

As adjectives the difference between practical and unfunctional

is that practical is based on practice or action rather than theory or hypothesis while unfunctional is not functional; ornamental, or serving some other purpose than a practical one.

As a noun practical

is a part of an exam or series of exams in which the candidate has to demonstrate their practical ability.

As nouns the difference between phytobiology and phytobiologist

is that phytobiology is the branch of biology that involves plants while phytobiologist is a person involved in phytobiology.

As a noun phytoglyphy

is nature printing.

As an adjective phytoglyphic is

of or pertaining to phytoglyphy.

As nouns the difference between agent and phytocide

is that agent is agent (intermediary for certain services, such as for artistic performances or public relations) while phytocide is an agent that kills plants, such as weedkiller.

As nouns the difference between plant and phytocide

is that plant is an organism that is not an animal, especially an organism capable of photosynthesis. Typically a small or herbaceous organism of this kind, rather than a tree while phytocide is an agent that kills plants, such as weedkiller.

As a verb plant

is to place (a seed or plant) in soil or other substrate in order that it may live and grow.