Noun

(en noun)

A formal, usually lengthy, systematic discourse on some subject.

*

*:“[…] We are engaged in a great work, a treatise on our river fortifications, perhaps?? But since when did army officers afford the luxury of amanuenses in this simple republic??”

*2005 , (Plato), Sophist . Translation by Lesley Brown. .

*:And if someone wants to know how to make objections to actual craftsmen themselves on the subject of art in general or any particular art, there are published treatises available, as you know.

*{{quote-magazine, year=2013, month=July-August, author= Sarah Glaz

, title= Ode to Prime Numbers , volume=101, issue=4, magazine=(American Scientist) , passage=Some poems, echoing the purpose of early poetic treatises on scientific principles, attempt to elucidate the mathematical concepts that underlie prime numbers. Others play with primes’ cultural associations. Still others derive their structure from mathematical patterns involving primes.}}

Noun

(en noun)

A written composition of moderate length exploring a particular issue or subject.

*{{quote-magazine, date=2013-01

, author=Katie L. Burke , title=Ecological Dependency , volume=101, issue=1, page=64 , magazine= citation , passage=In his first book since the 2008 essay collection Natural Acts: A Sidelong View of Science and Nature , David Quammen looks at the natural world from yet another angle: the search for the next human pandemic, what epidemiologists call “the next big one.”}}

(obsolete) A test, experiment; an assay.

An attempt.

* 1988 , James McPherson, Battle Cry of Freedom , Oxford 2003, p. 455:

This was Lee's first essay in the kind of offensive-defensive strategy that was to become his hallmark.