Adjective

(en adjective)

Opposed to change; urging a return to a previous state.

Very conservative.

* {{quote-book

, date = 2011-09-29 , title = The Reactionary Mind: Conservatism from Edmund Burke to Sarah Palin , author = Corey Robin , location = New York , publisher = Oxford University Press , isbn = 9780199793747 , ol = 25101368M , page = 25 , pageurl = http://books.google.com/books?id=CWxIz_Gm9WMC&pg=PA25&dq=reactionary , passage = There's a fairly simple reason for the embrace of radicalism on the right, and it has to do with the reactionary imperative that lies at the core of conservative doctrine. If he is to preserve what he values, the conservative must declare war against the culture as it is. }}

(chemistry) Of, pertaining to, participating in or inducing a chemical reaction.

* 2013 , Brandon Smith, Are Individuals The Property Of The Collective?

Psychiatry extends the theory into biology in the belief that all human behavior is nothing more than a series of reactionary chemical processes in the brain that determine pre-coded genetic responses built up from the conditioning of one’s environment.

Adjective

(en adjective)

Conforming to the established, accepted or traditional doctrines of a given ideology, faith or religion.

* 2005 , Alister E McGrath, Iustitia Dei :

Five important modifications were made by the Pietists to the orthodox doctrine of justification, each corresponding to a distinctive aspect of the movement's agenda.

* 2009 , Andrew Brown, The Guardian , 23 Dec 2009:

‘These speakers are academics who have specialised in Islamic sciences and are well respected in scholarly circles. It is grossly unjust to suggest that they belong to some fringe ideology rather than orthodox Islam.’

Adhering to whatever is traditional, customary or generally accepted.

Viable for a long time, viable when dried to low moisture content.