What does exsiccated mean?
Exsiccated is the past tense and past participle of the verb exsiccate, meaning dried thoroughly — stripped of all moisture. It can also function as an adjective describing something that has been so treated, as in 'exsiccated specimens' preserved in a herbarium. The word derives from the Latin siccus, meaning dry, via exsiccare, 'to dry up,' which makes it an exact sibling of the far more familiar desiccated. Where desiccated has spread into everyday use (think coconut flakes or humorous descriptions of skin), exsiccated remains confined largely to formal, scientific registers: botany, pharmacology, and chemistry. Botanists even publish reference works called exsiccatae — systematically collected and labelled dried plant specimens. A writer reaching for exsiccated signals precision and erudition rather than casual description, though in nearly all modern contexts desiccated would be the natural choice.
Dried thoroughly; deprived of all moisture.
"The technician exsiccated the samples overnight before weighing them."
Chiefly found in technical and scientific writing.
Completely dried; having been deprived of moisture.
"The museum's exsiccated ferns were mounted behind glass."
Most common in herbarium and pharmaceutical contexts.
'Exsiccated' and 'desiccated' are siblings born of the same dry Latin root — one just stayed in the laboratory while the other went to the supermarket.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of exsiccated
Exsiccated comes from the Latin verb exsiccare, formed from ex- ('out') plus siccare ('to make dry'), itself rooted in siccus, 'dry'. English adopted the verb exsiccate in the late 16th century, alongside the parallel formation desiccate from the same Latin source. Its most enduring use is botanical: pluralized as exsiccatae, it names published sets of pressed, dried plant specimens that have circulated among institutions since at least the 18th century.
Word family
Usage notes
Register: formal to highly technical. The word appears chiefly in botany (exsiccatae — published collections of dried plant specimens), pharmacy, and older chemical literature; general writing strongly prefers 'desiccated'. It carries no strong connotation beyond clinical precision.
Don't confuse with
Desiccated is the far more common everyday word meaning dried out, while exsiccated is its rarer, more technical synonym derived from the same Latin root.