Types & Characteristics of Genres: Poetry. A main literary genre is poetry. All poems share specific characteristics. For example, poetry is written in lines and stanzas instead of sentences and paragraphs. Some poems follow strict rules as to the number and length of lines and stanzas, whereas many poems are much more free-flowing.
Freebase(0.00 / 0 votes)Rate this definition: Methotrexate. Methotrexate, abbreviated MTX and formerly known as amethopterin, is an antimetabolite and antifolate drug. It is used in treatment of cancer, autoimmune diseases, ectopic pregnancy, and for the induction of medical abortions. It acts by inhibiting the metabolism of folic acid.
Tell your dentist or doctor that you are taking methotrexate before you have a surgical procedure. 1  Methotrexate is a medicine that comes from folic acid and is called an antimetabolite. Methotrexate is given to patients to treat a number of medical conditions, including a skin condition called psoriasis. It is also given to patients to treat rheumatoid arthritis and certain types of cancers.