f_{1} is an absolute value function from domain f_{2} to range f_{3}.

Defined by: f(x) = abs(x)

- cuxna
- x
_{1}chooses/selects x_{2}[choice] from set/sequence of alternatives x_{3}(complete set). - fancu
- x
_{1}is a function/single-valued mapping from domain x_{2}to range x_{3}defined by expression/rule x_{4}. - zekri
- x
_{1}(event/state) is a punishable crime/[taboo/sin] to people/culture/judges/jury x_{2}.

- cmapagjvo
- x
_{1}(text) is a lujvo with meaning x_{2}and arguments x_{3}, and which is constructed from tanru/veljvo x_{4}such that each element of the veljvo is ultimately only a cmavo (including "{zei}", "{ke}"/"{ke'e}", "{bo}", etc.), gismu, or rafsi of such cmavo or gismu. - zejvo
- x
_{1}(text) is a Lojban compound predicate using the particle “zei”; with meaning x_{2}, arguments x_{3}, built from metaphor (tanru) x_{4}. - luvrzei
- x
_{1}(text) is a Lojban compound predicate using the particle “zei”; with meaning x_{2}, arguments x_{3}, built from metaphor (tanru) x_{4}. - zeiljvo
- x
_{1}(text) is a Lojban compound predicate using the particle “zei”; with meaning x_{2}, arguments x_{3}, built from metaphor (tanru) x_{4}. - zo si si zei fa'o
- x
_{1}is a nonsense zei-lujvo using parts x_{2}, silly by standard x_{3}.

- gu'au'i
- mekso operator, variable arity - algebraic structure order of X1; OR: order of/(size of) period of element X1 in algebraic structure X2 under operator/of type X3
- ka'au
- mekso unary operator: cardinality (#, | |)
- sei'au
- terbri editor: passes the terbri value through the quoted function so that the sumti that fills it really is filling the output of the function
- cu'alni
- x
_{1}is the absolute value of x_{2} - cu'alvu'u
- x
_{1}is the absolute difference of numbers x_{2}and x_{3}; x_{1 }= |x_{2 - x}