light and thin / (figuratively, by extension) having a flimsy factual basis; unsubstantiated, hard to believe

plural of thin section

(mineralogy) A thin, optically flat sliver of a material, especially a rock or mineral, that can be used in microscopy. / Used other than figuratively or idiomatically: see thin, section.

(idiomatic) Something that if allowed or accepted to a small degree would lead to systematic encroachment.

Alternative form of thin end of the wedge

(analytical chemistry) A form of chromatography in which the solid phase is silica gel or a similar inert material supported on a glass plate.

(analytical chemistry) Alternative spelling of thin-layer chromatography

(idiomatic) To be (or to place oneself) in a risky, potentially dangerous or delicate situation.

A pizza with a thin and crispy bread base. / Synonym of New York-style pizza

The members the 93rd Regiment of the British Army who met the charge of the Russian cavalry at the Battle of Balaclava in 1854. / Any thinly spread military unit holding firm against attack.