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Glossary

The jargon, in one or two sentences each. These definitions also pop up when you tap a dotted word inside any guide.

dollar-cost averaging

Buying a fixed amount on a fixed schedule, regardless of price.

drawdown

The fall from an account high to a later low, as a percentage. A 30% drawdown needs a 43% gain to recover.

expert advisor

An automated trading program for MetaTrader 4 or 5, often sold as a "bot".

funding rate

A small payment between longs and shorts on perpetual futures that keeps the perp price near spot.

grid trading

Opening positions at fixed price steps as the market moves, then closing the basket together.

leverage

Borrowed exposure. 10x leverage means a 10% move against you wipes out the margin.

liquidation

When an exchange force-closes a leveraged position because the margin can no longer cover the loss.

martingale

A sizing rule that increases position size after each loss, usually doubling, so one win recovers all earlier losses. Smooth until a long losing streak.

overfitting

Tuning a strategy so closely to past data that it captures noise, not a repeatable edge.

perpetual

A futures contract with no expiry date, the most traded crypto derivative.

perps

Short for perpetual futures: futures with no expiry, kept near spot price by funding payments.

probabilistic sharpe ratio

The probability that the true Sharpe ratio is above zero, given how many trades you have and how lumpy they are.

prompt injection

Text written to trick an AI model into following instructions it should ignore.

risk of ruin

The chance a strategy loses so much that it cannot recover, estimated here as falling to half the starting balance.

seed phrase

The 12 or 24 words that can restore a crypto wallet. Anyone with them controls the funds.

sharpe ratio

Average return divided by how much returns swing around. Higher means smoother returns for the same profit.

walk forward

Testing a strategy by optimising on one period and checking it on the next, then rolling forward.