diff --git a/src/qt/forms/sendcoinsdialog.ui b/src/qt/forms/sendcoinsdialog.ui
--- a/src/qt/forms/sendcoinsdialog.ui
+++ b/src/qt/forms/sendcoinsdialog.ui
@@ -826,7 +826,7 @@
                  <item>
                   <widget class="QRadioButton" name="radioCustomPerKilobyte">
                    <property name="toolTip">
-                    <string>Specify a custom fee per kB (1,000 bytes) of the transaction's virtual size.
+                    <string>Specify a custom fee per kB (1,000 bytes) of the transaction's size.
 
 Note:  Since the fee is calculated on a per-byte basis, a fee of "100 satoshis per kB" for a transaction size of 500 bytes (half of 1 kB) would ultimately yield a fee of only 50 satoshis.</string>
                    </property>
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -421,13 +421,13 @@
            "transaction entered pool\n"
            "    \"descendantcount\" : n,  (numeric) number of in-mempool "
            "descendant transactions (including this one)\n"
-           "    \"descendantsize\" : n,   (numeric) virtual transaction size "
+           "    \"descendantsize\" : n,   (numeric) transaction size "
            "of in-mempool descendants (including this one)\n"
            "    \"descendantfees\" : n,   (numeric) modified fees (see above) "
            "of in-mempool descendants (including this one) (DEPRECATED)\n"
            "    \"ancestorcount\" : n,    (numeric) number of in-mempool "
            "ancestor transactions (including this one)\n"
-           "    \"ancestorsize\" : n,     (numeric) virtual transaction size "
+           "    \"ancestorsize\" : n,     (numeric) transaction size "
            "of in-mempool ancestors (including this one)\n"
            "    \"ancestorfees\" : n,     (numeric) modified fees (see above) "
            "of in-mempool ancestors (including this one) (DEPRECATED)\n"
diff --git a/src/txmempool.h b/src/txmempool.h
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -459,7 +459,7 @@
     //!< Used by getblocktemplate to trigger CreateNewBlock() invocation
     unsigned int nTransactionsUpdated;
 
-    //!< sum of all mempool tx's virtual sizes.
+    //!< sum of all mempool tx's sizes.
     uint64_t totalTxSize;
     //!< sum of dynamic memory usage of all the map elements (NOT the maps
     //! themselves)
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3045,7 +3045,7 @@
                 nValueToSelect += nFeeRet;
             }
 
-            // Static vsize overhead + outputs vsize. 4 nVersion, 4 nLocktime, 1
+            // Static size overhead + outputs vsize. 4 nVersion, 4 nLocktime, 1
             // input count, 1 output count
             coin_selection_params.tx_noinputs_size = 10;
             // vouts to the payees