sinxa -sni- gismu

x1 is a sign/symbol/signal representing/referring/signifying/meaning x2 to observer x3.

Also: x1 signifies x2; (adjective:) x1 is significant/meaningful/of import; signal an action (= sniti'i), connotation (= se sibyti'isni, sibyti'ismu). See also lerfu, tcita, barna, mifra, smuni.


In notes:

barna
x1(s) is a/are mark(s)/spot(s) on x2 of material x3.
lerfu
x1 (la'e zo BY/word-bu) is a letter/digit/symbol in alphabet/character-set x2 representing x3.
mifra
x1 is encoded/cipher text of plain-text x2 by code/coding system x3; x1 is in code; x3 is a code.
smuni
x1 is a meaning/interpretation of x2 recognized/seen/accepted by x3.
tcita
x1 is a label/tag of x2 showing information x3.
smuvanbi
v1 is the context of meaning v2=s1 of event/action/object s2 recognized by s3.
snicmaci
c1 is an algebra of type/describing c2
snicne
x1 is a variable taking value x2 under conditions x3.
snigau
x1 assigns symbol/variable x2 to value/referent x3 for observer x4.
tapsni
si1 is a track of st1 treading on surface st2 using limb st3
zgika'usni
s1 is a music note (symbol).
snitatu
x1 is a tattoo