x_{1} is a member/element of set x_{2}; x_{1} belongs to group x_{2}; x_{1} is amid/among/amongst group x_{2}.

x_{1} may be a complete or incomplete list of members; x_{2} is normally marked by la'i/le'i/lo'i, defining the set in terms of its common property(ies), though it may be a complete enumeration of the membership.
See also ciste, porsi, jbini, girzu, gunma, klesi, cmavo list mei, kampu, lanzu, liste.

- ciste
- x
_{1}(mass) is a system interrelated by structure x_{2}among components x_{3}(set) displaying x_{4}(ka). - girzu
- x
_{1}is group/cluster/team showing common property (ka) x_{2}due to set x_{3}linked by relations x_{4}. - gunma
- x
_{1}is a mass/team/aggregate/whole, together composed of components x_{2}, considered jointly. - jbini
- x
_{1}is between/among set of points/bounds/limits x_{2}(set)/amidst mass x_{2}in property x_{3}(ka). - kampu
- x
_{1}(property - ka) is common/general/universal among members of set x_{2}(complete set). - klesi
- x
_{1}(mass/si'o) is a class/category/subgroup/subset within x_{2}with defining property x_{3}(ka). - lanzu
- x
_{1}(mass) is a family with members including x_{2}bonded/tied/joined according to standard x_{3}. - liste
- x
_{1}(physical object) is a list/catalog/register of sequence/set x_{2}in order x_{3}in medium x_{4}. - porsi
- x
_{1}[ordered set] is sequenced/ordered/listed by comparison/rules x_{2}on unordered set x_{3}. - mei
- convert number to cardinality selbri; x
_{1}is a mass formed from a set x_{2}of n members, one or more of which is/are x_{3}, measured relative to the set x_{4}. - cmibi'o
- b
_{1}=c_{1}becomes a member of group b_{2}=c_{2}under conditions b_{3}. - cmigau
- g
_{1}puts together c_{1}into group c_{2}. - cmimei
- x
_{1}(collection/sequence) has x_{2}(number) members - cmisau
- s
_{1}=c_{1}is logged into system/application s_{2}=c_{2}. - cmiveigau
- g
_{1}=v_{3}registers c_{1}as a member of c_{2}, registration preserved in medium x_{3}=v_{4}. - cu'acmi
- cm
_{1}=cu_{1}is a member of electorate cm_{2}, which votes/selects cu_{2}[choice] from set/sequence of alternatives cu_{3}. - jutcmi
- x
_{1}(organism) is a member of species x_{2}, genus x_{3}, etc. - klecmi
- x
_{1}is a member of class / category x_{2}(mass / plurality), within supergroup x_{3}, with defining quality x_{4} - leicmi
- x
_{1}is a member of class / category x_{2}(mass / plurality), within supergroup x_{3}, with defining quality x_{4} - nuncmibi'o
- n
_{1}is the integration of b_{1}=c_{1}as a member/element of group/set c_{2}under conditions b_{3} - selcmi
- x
_{1}is the set whose members are x_{2}; x_{2}are the members of x_{1}. - terporcmi
- x
_{1}is a member of the unordered set x_{2}upon which rules x_{3}are applied in order to produce list x_{4}; x_{1}is a member of the elements constituting list x_{4}. - cletu
- x
_{1}is a mathematical set, containing members x_{2} - cei'u
*(exp!)* - extracts an element from a set, category, class, group, collection, organization, system, etc.
- fi'ai
*(exp!)* - marks end of prenex in stack-based dialect
- ji'oi
*(exp!)* - This cmavo precedes a predicate (at least binary) and turns it into a conjunction, which syntactically behaves like JA cmavo. The predicate indicates the relationship between the two connected propositions. Terminator: {te'u}.
- mei'e
*(exp!)* - Accepts any number of sumti and turns them into a selbri-unit that means "x
_{1}is among the referents of these sumti". - se'u'o
*(exp!)* - selbri conversion question
- aigne
- x
_{1}is an eigenvalue (or zero) of linear transformation/square matrix x_{2}, associated with/'owning' all vectors in generalized eigenspace x_{3}(implies neither nondegeneracy nor degeneracy; default includes the zero vector) with 'eigenspace-generalization' power/exponent x_{4}(typically and probably by cultural default will be 1), with algebraic multiplicity (of eigenvalue) x_{5} - porkifa'u
- x
_{1}is a sequence of sequences, whose elements are related respectively by x_{2}(property, arity is length of x_{1}) - setmima
- x
_{1}is a mathematical set, containing members x_{2}