(intransitive) To form a synapse. / (intransitive) To undergo synapsis.

Of or relating to a synopsis.

Of, or relating to synthesis. / (chemistry) Produced by synthesis instead of being isolated from a natural source (but may be identical to a product so obtained).

A synthetic compound.

(sciences) The science of describing an entire weather situation at a specific location

(chiefly Britain, Canada) Condition caused by a chromosomal deficiency, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids.

(pathology) A recognizable pattern of signs, symptoms and/or behaviours, especially of a disease or medical or psychological condition.

(transitive) To combine two or more things to produce a new product. / (intransitive, of two or more things) To be combined producing a new, more complex product.

(intransitive) To occur at the same time or with coordinated timing. / (transitive) To cause (video and audio) to play in a coordinated way.

(linguistics) The system of the internal structure of words (morphology) and the way in which words are put together to form phrases and sentences (syntax). / (linguistics, formal) Grammar.