This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Any of various large, herbivorous mammals, of the order Proboscidea, that have a trunk; the elephants

adj. Proboscidian.

Having a proboscis or trunk; proboscidate or proboscidiferous; belonging to the mammalian order Proboscidea.

Of or pertaining to a proboscis: as, “the proboscidean sheath of the Nemertines,”

Also proboscidial, proboscoid.

n. A mammal of the order Proboscidea; an elephantid or dinotheriid.

n. Also proboscidian.

n. massive herbivorous mammals having tusks and a long trunk

"The image above from Utah may look familiar to you as I blogged about it here a couple of months ago as one of the very few possible images of Pleistocene megafauna a proboscidean from North American rock art."

eutherian    placental mammal    eutherian mammal    placental   

proboscidean flukes   

elephant    mastodont    mastodon   

proboscidian