A programming language
formerly much in vogue among users of microcomputers. FORTH operands are held on a stack
, and programs take the form of strings in reverse Polish notation
. A vital feature of FORTH is that a symbol (a WORD) can be associated with any program string, and such a user-defined word can then be used in expressions on equal terms with the system words (operators). This makes FORTH a flexible extensible language
in which it is possible to define a customized language for, say, the control of a scientific instrument. The FORTH system is very compact; the interpreter and the dictionary containing the system-defined words can be fitted into 8K bytes. FORTH is now little used, but the same principles are found in PostScript
adv. chiefly archaic
out from a starting point and forward or into view:
the plants will bush out, putting forth fresh shoots.
onward in time:
from that day forth he gave me endless friendship.
and so forth
and so on:
particular services like education, housing, and so forth.
forwards (now only in back and forth
); onwards (surviving in gen. use in and so forth
); forward into view; away. OE. forð
= OS. forth
), MHG. vort
) :- Gmc. *furþa
further) :- IE. *pṛto-
, f. base repr. in FORE-
about or ready to appear XVI; ready to make advances XIX. forthright
†at the same time; immediately XIV; partly short for earlier forthwithal
(XI), partly repl. ME. forth mid
along with, at the same time as, used absol.
, fourth, henceforth, north, thenceforth