Dictionary.net

kinship by marriage or adoption; not a blood relationship

a natural attraction or feeling of kinship; "an affinity for politics"; "the mysterious affinity between them"; "James's affinity with Sam"

the force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"

(immunology) the attraction between an antigen and an antibody

a close connection marked by community of interests or similarity in nature or character; "found a natural affinity with the immigrants"; "felt a deep kinship with the other students"; "anthropology's kinship with the humanities"

(biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts; "in anatomical structure prehistoric man shows close affinity with modern humans"

kinship by marriage or adoption; not a blood relationship

a natural attraction or feeling of kinship; "an affinity for politics"; "the mysterious affinity between them"; "James's affinity with Sam"

the force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"

(immunology) the attraction between an antigen and an antibody

a close connection marked by community of interests or similarity in nature or character; "found a natural affinity with the immigrants"; "felt a deep kinship with the other students"; "anthropology's kinship with the humanities"

(biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts; "in anatomical structure prehistoric man shows close affinity with modern humans"

Kinship generally; close agreement; relation; conformity; resemblance; connection; as, the affinity of sounds, of colors, or of languages.

Companionship; acquaintance.

That attraction which takes place, at an insensible distance, between the heterogeneous particles of bodies, and unites them to form chemical compounds; chemism; chemical or elective affinity or attraction.

A superior spiritual relationship or attraction held to exist sometimes between persons, esp. persons of the opposite sex; also, the man or woman who exerts such psychical or spiritual attraction.

Relationship by marriage (as between a husband and his wife's blood relations, or between a wife and her husband's blood relations); - in contradistinction to consanguinity, or relationship by blood; - followed by with, to, or between.

A relation between species or highe groups dependent on resemblance in the whole plan of structure, and indicating community of origin.

Kinship generally; close agreement; relation; conformity; resemblance; connection; as, the affinity of sounds, of colors, or of languages.

Companionship; acquaintance.

That attraction which takes place, at an insensible distance, between the heterogeneous particles of bodies, and unites them to form chemical compounds; chemism; chemical or elective affinity or attraction.

A superior spiritual relationship or attraction held to exist sometimes between persons, esp. persons of the opposite sex; also, the man or woman who exerts such psychical or spiritual attraction.

Relationship by marriage (as between a husband and his wife's blood relations, or between a wife and her husband's blood relations); - in contradistinction to consanguinity, or relationship by blood; - followed by with, to, or between.

A relation between species or highe groups dependent on resemblance in the whole plan of structure, and indicating community of origin.

Relationship; tendency toward attraction.

Nearness of kin, agreement, or resemblance: relationship by marriage, opposed to consanguinity or relationship by blood: (chem.) the peculiar attraction between the atoms of two simple substances that makes them combine to form a compound.

Relation by marriage; chemical attraction.

Natural inclination; chemical attraction.

Relationship; similarity in all essential organs.

Inherent likeness.

Chemical attraction.

Relationship or kinship.

In chemistry, the attraction of elements or groups of elements for each other or the tendency of dissimilar substances to unite with each other.

In teratology, the tendency of double monsters to unite with each other.

n. [Latin] Relationship by marriage; - close agreement; connection; - that attraction which takes place between the heterogeneous particles of bodies, and forms compounds; a relation dependent on resemblance in structure, and making a species or group.

Relation by marriage; relation to, connexion with.