1) Biological process 2) Organic process 3) Synapse 
Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis. When homologous chromosomes synapse, their ends are first attached to the ...
The gene by gene alignment of homologous chromosomes during meiosis.
The pairing of homologous chromosome pairs during prophase of the first meiotic division, when crossing over occurs.
<cell biology> The specific pairing of the chromatids of homologous chromosomes during prophase I of meiosis. It allows crossing over to take place. ... (18 Nov 1997) ... 
(sĭ-nap´sis) the intimate association of homologous chromosomes that occurs during the zygotene stage of meiosis I.
The specific pairing of the chromatids of homologous chromosomes during prophase I of meiosis. It allows crossing-over to take place.
Type: Term Pronunciation: si-nap′sēz Definitions: 1. The point-for-point pairing of homologous chromosomes during the prophase of meiosis. Synonyms: synaptic phase
Synapsis: The side-by-side and point-by-point pairing of homologous chromosomes during meiosis.
[n] - the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
noun the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
The alignment of chromosomes during meiosis I so that each chromosome is beside its homologue.
Also calledthe pairing of homologous chromosomes, one from each parent, during early meiosis. · synapse.