Noun

(uncountable) Health, safety, happiness and prosperity; well-being in any respect.

* , chapter=19

, title= The Mirror and the Lamp , passage=Nothing was too small to receive attention, if a supervising eye could suggest improvements likely to conduce to the common welfare . Mr. Gordon Burnage, for instance, personally visited dust-bins and back premises, accompanied by a sort of village bailiff, going his round like a commanding officer doing billets.}}

(uncountable, chiefly, US) Various forms of financial aid provided by the government to those who are in need of it (abbreviated form of Welfare assistance ).

Noun

(uncountable) The process of developing; growth, directed change.

* {{quote-magazine, date=2013-07-19, author= Ian Sample

, volume=189, issue=6, page=34, magazine=(The Guardian Weekly) , title= Irregular bedtimes may affect children's brains , passage=Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits.  ¶ Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found.}}

(uncountable, biology) The process by which a mature multicellular organism or part of an organism is produced by the addition of new cells.

*

Of more significance in the nature of branch development ; in the Jubulaceae, as in the Porellaceae, branches are acroscopic and normally replace a ventral leaf lobe.

(countable) Something which has developed.

(real estate, countable) A project consisting of one or more commercial or residential buildings, real estate development.

(real estate, uncountable) The building of a real estate development.

(uncountable) The application of new ideas to practical problems (''cf. research).

(chess, uncountable) The active placement of the pieces, or the process of achieving it.

(music) The second section of a piece of music in sonata form.